asking why be upset with them when there’s other people to be upset about is just whataboutism
I don't think so, many people didn't vote, and leftists are an extreme minority in this country, so it's certainly a choice to focus on them and not all non-voters.
Like yes, all those others are also bad. Doesn’t mean I’m gonna cut them any slack.
Who's saying anything about cutting slack? Yes all non-voters are to blame, but the meme is about Pro-Palestinians causing the apocalypse, not non-voters.
It's not whataboutism to ask why one focuses intensely on a small minority, when you admit that the problem is beyond that minority.