

At this point, “we should install more solar panels and waste less food” is seen as crazy hippy delusion by the American right.
If anything, the American Democratic Party has swung too far in the other direction, portraying itself as defenders of the status quo - even being willing to move further right - in order to avoid being seen as “crazy hippies”.
Meanwhile, MAGA is a utopian movement - it wants to completely transform America in the image of an idealized Christian conservative past, and doesn’t care what laws it has to break in the process.
The Democrats haven’t been able to effectively challenge MAGA’s utopian vision, because all they offer is a return to the status quo under Biden, and Americans are sick of that status quo. And the American left outside the Democratic Party has been so marginalized (mostly by the Democratic Party) that even mild “let’s do things a little bit better” leftists like Bernie Sanders have no real voice in American politics.
It’s not about being crazy hippies. It’s about having a vision for a better America, a plan to carry it out, and the courage to fight for that plan even when people call you a crazy hippie.
Are you talking about fresh fruit and vegetables? That sounds like you’re wasting a lot - in terms of money, not just in terms of food. It’s pretty easy to tell whether fresh fruit and vegetables are going bad (getting rotten, getting moldy, and so on), and if they’re not going bad they’re fine to use, whether there’s an expiration date or not.
Which is to say, I don’t think reducing food waste is a non-starter, but I do think it’s a matter of bottom-up education and practice (for you, I think that would mean learning how to tell when fruits and vegetables are going bad, and being confident enough in your knowledge that you can feel secure eating fruit and vegetables you didn’t buy recently) as much as it is top-down changes in policy.