How strict are you with handing out copyright violations?

I create a lot of short content on YouTube and other platforms, I always post it to YT first so that I have copyright protection.

Often, I'll see my content used in compilation videos and I'm usually pretty strict with it if the whole channel is made up of other peoples content. If it's a reaction video, I'll let it slide.

My question to you is, how strict are you with handing out copyright strikes?