[BaronVonSteuben]

The Svelte banner looks ok on desktop, but yeah seriously problematic on mobile.

I think this is an outgrowth of the "use whatever power you have to push for change" culture. It has been highly effective in the past, particularly with gay marriage, and I think those victories gave it enough gas to run for many years even without success. There's also the social points that one gets from it as well. I know of at least one project that added a BLM banner to their site because of social pressure, even though they felt that much of the protesting had gone too far (burning businesses, looting, blocking traffic, etc). The whole "not to take a side is to take a side" is a powerful social pressure to conform. I know of one other project that added a BLM banner so they could get on an "awesome list of BLM supporting software" or something like that which drove them a lot of traffic. Anyway my point is that there are lots of motivations for such, and I suspect many if not most aren't because the person has a deep and abiding passion for the cause (though without a doubt, some do).