I was literally just thinking about this, like a few minutes before seeing this post. It sounds like for some reason this political usage of "weird" is working, and annoying me is a small price to pay to stop Trump. But it does bug me, mostly because anything the left starts using, the right will eventually appropriate, and then it will spread and get widespread use outside of politics. I can see it becoming like "snowflake", which used to mean "special and unique", and then started being used in political discourse to mean "oversensitive", and is now being used everywhere. I wouldn't be surprised if this trend means that a couple of years from now, "weird" is a very popular go-to insult even outside of politics, which will habituate people to associating weirdness with negativity (not that people need any incentive to do that).

Obviously it's a better outcome than a lot of other things that can result from politics, but it's irksome now and I can imagine the world being mildly more uncomfortable for everyone who doesn't conform to mainstream social standards in a couple of years than it is now.

Tl;Dr - sounds like you're thinking exactly what I was thinking, down to the mild-to-moderate level of discomfort and the acknowledgement that it might be necessary