I have and its not just intonation its other things like guitar care or what strings to use or how some people think its a good idea to completely replace a part like the switch and give such bad advice on parts replacement only to have the same person come back later and say "I can hear buzzing now".
I break it down to the following.
New players tends to blindly listen to more experienced players, its just the standard. They figure these guys have been playing a while they must know what to do. Not always the case but its just the trend.
People really dont want to take the time to go and watch a few videos and actually try and learn what to do and what not to do. They figure ask a question on a forum and you'll get the best advice. Quick, easy and seems reliable.
The real answers are not on page 1 they are further down the forum chain and by then the new player has already gone and done damage (still reversible mind you) but its already a bit too late.
Lastly, the internet loves trolls. Why anyone would tell someone to purposely fuck an instrument is beyond me but i've seen it enough times to know that advice still needs to be double checked.
If someone tells me to blindly turn a truss rod I'd ask them to kindly go to the top of their building and try jumping off it a few times for me as well, I'll wait while you do.