I think environmentalism is misguided when it works on the principle of “everything that sounds good for the environment is equally important, we don’t need to pay attention to whether it works”. Global warming is a real danger. Running out of landfill space is not. Stop pretending like you are helping the environment when you do symbolic but unimportant things like using paper straws or reusable grocery bags. Take all the money spent on ineffective things like paper recycling and disallowing plastic bags, and put it towards the technologies that can really help, like cheaper solar power, cheaper wind power, cheaper batteries, and carbon sequestration.
It's a rather good thing, then, that just about nobody advocates or implements that strategy.
Your examples happen to be of small effect (but also rather low cost) ideas that are just being amplified by detractors because they play well among a certain segment of the population.
Isn't this a false dichotomy?