The rules for using copyrighted content are the same on FOSS platforms as for the big players, legally speaking. The difference is the FOSS platforms simply don't have the same enforcement mechanisms in place, so they won't give you warnings directly and automatically. If a rights-holder comes across something that uses their content, however, they can still come after you under the law using things like the DMCA.
Yea, I was aware of the legality. But good to know. I was using AI music in my videos that gives me a license to use them. No one would give a strike regardless. I never monetized anyway. Just didn't want to have silent videos.