I mean, simple mistakes are obviously understandable. If someone, say, misses a part the person has, and recommends a weaker part, it's understandable, especially if people don't bother to list all the parts they have, just the beys they own. If a combo is relatively new and the person misses recommending it, that's understandable, I guess.
Still, the point is that people shouldn't be making recommendations if they don't have a proper understanding of the game. There are plenty of us who do, and people's questions will be answered in due course (it really doesn't take long).
A "combo suggester certification" thing would be far too much work, but a simple warning for recommending when you clearly shouldn't be sounds completely reasonable. Sure, me/others yelling at people is normally just as effective, but it doesn't address the initial aspect that people still recommend things when they shouldn't, and it's a pain in the butt for those who have to yell.
It's misleading people, and as an official body, we should be aiming to avoid that where possible.