I've been using them almost since they came out and I'm still good. It's the only thing I've used, on this account, besides a trainer to get tokens a long time ago.
I've also been using reduced foliage since it was added. I try not to shoot through stuff that I shouldn't be able to see through but it's hard. There's tons of little spots that you can't see through without them. Almost every time I watch gameplay on Youtube I notice something that I had forgotten was blocking a line of sight.
However, I just removed reduced Foliage to be safe.
I really hope bans are coming from people not admitting they've used something else, from reports/reviews and not from VAC all of a sudden detecting modified textures. I don't know how'd I go back