How would that even work? No one's saying you have to like
Lower Decks or
Strange New World and no one's saying you're not part of the Star Trek fandom for not liking them.
"Convenient?" It's the objective definition of the term. "Gatekeeping" in this context means
to exclude. You were "gatekeeping"
Star Trek because you were trying to exclude
Discovery, Picard, Lower Decks, Prodigy, and
Strange New Worlds from the Prime Universe. If someone else says, "No, they're all the same universe because that is the clear text," then that's by definition not gatekeeping because it's not excluding anything.
And so does
Lower Decks.
Citation needed.