So a neat thing about truth is that these questions actually have answers! I encourage you to research them, if you're curious. We really don't need to live in this world of both-sides-ism.
(Also, I'm a bit bemused that these are the examples you chose... with everything going on in the world, what's got you upset is a possibly dubious investigation of your guy which never even came to anything...?)
People believe incorrect things all the time, for a variety of reasons. It doesn't mean the truth doesn't exist. Sure, sometimes, there isn't sufficient evidence to reasonably take a side.
But lots of times there is. For example, just because a lot of people now believe Tylenol causes autism doesn't mean we need to both-sides it... the science is pretty clear that it doesn't.
Lots of people can be wrong on this topic, and it should be ok to say that they're wrong. Whether you're an individual, a newspaper, an encyclopedia, or a LLM.
Not everybody is going to agree, heck even Nixon had like 24% support or so when was proven guilty of orchestration watergate and taping the whole thing. The benchmark isn't every human agreeing, it's just finding out what's true, and a lot of the times the facts are actually pretty compelling.