While that is part of it there algorithms are screwed, I get so much random shite.
You can see the suggestion loop it goes through. Anti Vegan->Anti Woke->Conspiracies->Gun nuts->Hunting->God botherers->back to the start and reloop and maybe add a new one into the mix the next time around. in the last few months I started to get lots of Thai sites and nightclubs being suggested. I have never shown any interest in going to Thailand!. the only thing I can think of is I went to a funeral for a mate who passed away and his wife is Thai and therefore there were a lot thai people at the funeral, it was a day or 2 after than I started getting all the random Thai posts.
I think I've blocked a good couple of thousand suggested pages over the last few years due to being total random nonsense. I actually think my block list is so long that I've made it even more confused to be honest :)