With a large pile of unfinished games spoilers are always a potential issue. I am pretty far along the spoiler-hating spectrum. I avoid trailers, and sometimes even refuse to read book blurbs. I realise that's pretty extreme, and I don't actually expect anyone to be that considerate. I've had to learn to make allowances, but I am still reasonably choosy about the information I read.
If I care strongly about a particular game I'll prioritise playing it, and be careful about what I read online. Normally this works out fine.