Not everyone is qualified to propose good ideas, but that doesn’t mean you aren’t qualified to point out a problem. I also feel that some things are hard to avoid on certain parts of the internet. I fully back BLM, but there have been times that I just want to enjoy memes without seeing yet another BLM post. That’s not because I think its been said to death, but it gets tiring to constantly be reminded of something terrible happening in the world. Sometimes you just need a break from it. ACAB is another example of that i think many people feel. I think you’re right though that not many people have offered good solutions, but I think we are still in the phase that there are plenty of people who still fully back the terrible acts being done by American police. So for now it’s still mostly just saying ACAB.