Look. You are - of course - allowed to think some plotlines are dumb. Demanding showrunners erase them is pretty silly and egotistical though.
NuWho has pretty much undermined the Looms and the "Doctor is the Other" stuff, but it hasn't gone out of its way to say "no, this never happened, shut up about it". It embraces the diversity of the setting - some Doctors WERE Loomed. Seven DID survive San Francisco to reunite with Ace decades later.
Sam CAN have two timelines.
The Third Doctor COULD have regenerated on Dust.
Nothing in the show has gainsayed any of this, because it doesn't have to.
If you think Hartnell was definitely the First Doctor, then the Timeless Child is a retcon by the TARDIS or some other powerful force to create her own creators. Faction Paradox would approve.
Yeah, but Faction Paradox like their own Cousins far too much. Normal for Norfolk.