Yes, yes, yes to all. Plant based fuels displace forests, so its a difficult fuel. Unless we are talking algae, but that's a really limited crop.

I think most people are environmentalists, but define it different. Conservatives are against Net Zero, because they are not convinced historical trend of 1 C warming over 50 years will continue for 100 years, and/or is a big concern, to destroy and rebuild global infrastructure. Sea level rising ? Don't build on the coast. More wildfires, droughts etc ? No convincing proof it will increase. Cheaper to not build in such areas than rejig the whole world on 100% renewable.