Lol, what a hilariously ironic and emotional response for someone so self assuredly mature. Do not read the comments section if you do not want to be spoiled. It's that simple. I haven't spoiled anything, and never will, so I'm not sure who you think you're calling out here. Certainly not me.
Understand that there will always be some jerk in the comments section posting spoilers without the spoiler tag. They are wrong for doing it. Spoilers should always be tagged. The point is that if not getting spoiled is greatly important to you, then it is in your best interest not to read the comments section. This goes for any media across any platform. Back to "maturity." Expecting everyone to behave in a forum is just inexperienced foolishness on your part. Whining about it will not un-spoil you, and all it does is encourage actual trolls.