In reply to your points,
1) On CFLs. You have this one right. It's a ery obvious case of greenwash.
2) Getting plastic bags out of our waste would be a very good thing. I've seen how many end up in the ocean and affect sea life. I agree though that the
supermarkets cynical approach is to sell us plastic bags that should be cheaper to make. Today I bought a 'biodegradeable' bag made from corn starch or some such thing for 15c. I can't see how cornstarch is more expensive than using oil to make plastic. Someone is profiteering, supermarkets or bag makers?
3) I don't see your point with solar hot water systems. My parents had one since the mid 1960's. It was replaced once and has given them hot water for four decades. They don't take much in the way of materials to make. Its only a metal and glass panel on the roof and a tank. The booster uses much less energy since on a cool day it's only usually having to heat the water from 30 or 40 degrees C. Most of the time the problem was that the water would come out TOO hot.
4) Water scarcity. You obviously don't live in marginal land. The current round of drought in Australia is getting critical. I do agree though that de-salination is not the way to go. Here in Australia we should be pouring less water into cattle, cotton and rice and growing more water efficient crops. Also it's mostly a distribution problem.
Your conclusion is spot on. Exponential growth in a finite world will lead to catastrophe. As far as I can see there's not a politician on the planet other than the Chinese communist government that have made any attempt to really address that issue.