I’m very much in two minds about this issue. I don’t have a problem with a general spoiler warning - but if you’re not part of the experimental branch, then everything in experimental is potentially a spoiler.
You’ve said yourself that up to a certain point, you regard the information here as helpful, but that beyond a certain dividing line, it becomes a spoiler. I fully understand your point.
The trouble is, that dividing line will come at a different point for every reader. One person’s helpful tip is another person’s spoiler. It’s not possible for the poster to know where the divide lies - it’s in many different places.
Add to that the fact that not everything in experimental is necessarily going to make it into the main game. That’s why they test it on volunteers first - in case it doesn’t work, or breaks something important.
The only answer, I feel, is to treat the whole thread as a potential spoiler. If you don’t want to know the future, don’t visit the fortune teller.