I'd like to carefully say that people not well trained in a field think that some solution X basically closes the whole problem Y, which is false. But instead of saying it is a common misconception, I'm saying it carefully: it is not uncommon.
I don't want to say "it is a common belief that X ends the search for Y" because that's not careful: experts know what's going on, but they'll also recognize that some people do have misconceptions and this is surely a case. At the same time I don't want to say something that sounds too odd or unnatural. How would you say it? (Do keep in mind that this is very formal writing, of course.)