It’s everywhere lately. It’s mostly something along the lines of both Biden and Trump being bad choices, so just don’t make a choice to “send a message”. Especially with the Israel/Palestine stuff, a large group has been convinced that Biden providing aid to the massacre of Palestinians means them voting for him is immoral. I agree it fucking sucks, but not voting is the immoral option. Remember how Trump tried to move things even further to Israel’s favor.
Some of it is a disinformation campaign to get people to not vote, but I think a large portion of what you see is people who have been convinced of it themselves and spread it organically. It’s impossible to tell the difference though, and it doesn’t really matter that they are different. They are effectively the same, but you can’t tell who actually believes it and who just sees it as useful.