Yes, that's true, I only care about actual damage to the environment. I do not care about curtailing actions that don't particularly harm it, and I would resist attempts to force people to curtail those actions just to make other people feel good.

It is not clear to me if you are advocating for everyone to not use plastic bags. If you choose to do net very-slight harm to the environment to take a stand against some thing you find aesthetically displeasing, that's find by me, because we're talking negligible values on all sides here. No sarcasm; I truly have no objection. We all tend to spend much greater on things much sillier. And you're putting your skin in the game, at your expense. No sweat.

If you are advocating that everybody should do so, that is at the very least questionable, though, and downright wrong at the government level. If the government is going to decide that environmental damage is a concern it has, which is fine, then at the very least they could use those powers to actually help the environment, rather than helping some particular people's sense of aesthetics, and their sense of aesthetics at other people's actions no less, while failing at their stated goals.