It is.
No, it isn't. A factoid is defined as "something fictitious or unsubstantiated that is presented as fact, devised especially to gain publicity and accepted because of constant repetition".
So an example of a factoid would be "ST09 is a reboot".
They're insignificant bits of trivia that don't really matter.
Seems like we're getting into self-fulfilling prophecy territory. Can it be said objectively that certain things "don't really matter" just because they don't matter to you?
I think people tend to think reboot when most of the characters are recast
I think people have the intellectual capacity to realize that William Shatner is too old to play Kirk as a 25-year-old.
there's a wholly different creative team with a new vision
By that logic Star Wars Episode 7 is a reboot, among many other things which are not in fact reboots.
and where the future of those characters is no longer established.
That's the nature of alternate timelines. Star Trek has always had parallel universes in the same overall continuity. No one ever shrieked "Reboot!" when the Mirror Universe episodes happened.
It doesn't really matter if a single character is the one they recognize, it's essentially a reboot.
Is "essentially" one of those words you can insert into a false statement to make it true?