Ok, so to you, it seems obvious and accepted that Rebecca Mercer is far-right.
However, traditionally, the terms "far-right" and "far-left" have been reserved for people who believe violent government coup is a legitimate means to an end.
And lately, people have taken to calling more moderate conservatives "far-right" and "nazis" as a way to delegitimize their opinions, and make them sound beyond-the-pale.
Ideologically far right doesn't mean 'racists take over capitol hill'.
AOC could be considered fairly 'far left' she's not exactly a radical.
To the OP's point, I think Parler was trying to legit be an alternative where they didn't have Jack Dorsey in charge, but I'm doubtful if they were actually looking for the holocaust denying crowd.
I suggest probably their comfort zone would have been 'Fox News'.
