The opposition leader, Sussan Ley, has said the Albanese government’s proposed hate speech and anti-vilification legislation appears “pretty unsalvageable” and rejected suggestions of hypocrisy by the Coalition after weeks of calls for new laws to tackle antisemitism.

After demanding parliament be immediately recalled in the wake of the Bondi beach terror attacks on 14 December, Ley on Thursday morning flagged the Coalition would oppose new laws introduced to parliament next week, including provisions for a new national gun buyback scheme.

Warning that Labor’s legislation contained dangerous carve-outs for preachers to use religious texts to spread hatred, she claimed key elements of the laws could not be explained by bureaucrats and that they would do little to protect Australian Jews or stop Islamic extremism and hate preachers inspiring new attacks.

“We called for the parliament to be recalled to hold a condolence motion to honour the victims, to help the nation come together, and we also wanted immediate action,” Ley said.

“The government has delivered neither. They fought the nation on the royal commission. They’ve taken a month to deliver this bad bill.”

But the Executive Council of Australian Jewry (ECAJ) urged the Coalition to push for improvements rather than oppose the bill, calling on Ley “not to allow the perfect to become the enemy of the good”.

“Some of the opposition’s criticisms of the bill are valid and repeat concerns which we ourselves have expressed about the bill’s shortcomings. However, there are also some important positives in the bill, including the introduction of a new listing regime to proscribe extremist hate organisations,” the ECAJ co-chief executive, Peter Wertheim, said.

Among Ley’s key concerns was the absence of provisions banning phrases such as “globalise the intifada” and “from the river to the sea”, which Jewish leaders say are antisemitic and inflammatory.

The Coalition’s own plans, released before Christmas, include passing legislation to give effect to the report by the government’s special envoy on antisemitism, Jillian Segal, and moves to strengthen and modernise counter-terrorism laws, including by giving new powers to the Australian federal police and Asio.

_{Sign up: AU Breaking News email}

It would also strip citizenship from dual-national terrorists and hate preachers and provide tougher bars on extremists entering Australia.

The Coalition’s likely opposition to the plan means the government will need the support of the Greens when parliament votes on the bill on Tuesday. The minor party is considering its position but has flagged likely amendments, including on freedom of political speech.

Greens MPs have expressed concern that protest rights, including for pro-Palestinian groups, could would be curtailed by the laws.

Ley was due to address members of Melbourne’s Jewish community on Thursday morning.

The prime minister, Anthony Albanese, said he was stunned by the Coalition’s position after weeks of demands from Ley and her shadow ministers.

“This is somewhat stunning, frankly. The Coalition day after day, very clearly, called for parliament to be recalled,” Albanese told the ABC on Thursday morning.

“You can’t have it both ways.

“It just seems to me, people who were watching the events since 14 December would have seen politics being played by the Coalition. They’re still playing politics, and I’m just stunned that they are saying they will vote against legislation, a number of their members without even looking at it.”

The rushed parliament inquiry is due to report this week. Last-minute deal-making is expected over the weekend, with Albanese promising to seriously consider proposed amendments.

The foreign affairs minister, Penny Wong, said Ley and the Coalition were showing “nothing more than weakness, nothing more than hypocrisy”.

Wertheim said the Coalition should seek amendments to improve the bill.

“By all means seek to amend the bill to remove its shortcomings, but a wholesale rejection of the bill would not at all be warranted. In our view, the defeat of the bill would be a retrograde step.

“The entire history of legislative reform concerning this issue has been one of incremental steps towards achieving the effective proscription of speech that deliberately promotes hatred of people based on their race, nationality or ethnic origin. The current bill would represent a significant further step towards that destination even if it does not completely get us there.

“We need legislative reform now even if it is less than ideal.”

Labor has said it will consider stronger legal protections for religious groups, people with a disability and LGBTQ+ Australians after the current bill passes parliament.