The phrase "are not supportive of" is correct and usable in written English.
You can use it when expressing a lack of support or endorsement for a particular idea, action, or individual.
Example: "The committee's decisions indicate that they are not supportive of the proposed changes to the policy."
Alternatives: "do not endorse" or "are against".
But the government in Israel, the institutions, they are not supportive of the film so much.
Institutions are not supportive of the holistic student experience, often leaving co-curricular activities to underfunded student unions.
There are also some surprises from characters, not to be named here, who are not supportive of the union.
After all, rural health centres can kill private sector work and products stone dead if they are not supportive of them.
He said Palaszczuk should remain premier because he believed "Queenslanders and Australians are not supportive of leadership changes during a parliamentary term".
If they think it is the wrong plan and they are not supportive of it, then I need to know and we can move in a different direction".
Richard Brooks says large scale disaffiliation would mean students losing a strong voice at a time when government policies are not supportive of young people.
Salmond says the Scottish government has not heard anything to suggest that other EU countries are not supportive of Scotland's EU membership.
"Global coal prices right now are not supportive of large-scale U.S. coal exports," said Anthony Yuen, a Citigroup energy analyst.
"We are concerned that some of the tactics they're using to address their security issues are polarising … they in some ways radicalise certain aspects of Egyptian society in ways that are not supportive of overall stability," the official said.
Their interventions on the energy bill, and clear interference over [renewable energy subsidies] ROCs have shown this – it all adds up to a clear sign that they are not supportive of progress on the low-carbon energy sector".
