A lot of that is hugely twisting or outright lying about what they said, or twisting innocent things to serve your own agenda.
M inferred Archie not allowed to be a Prince because of his colour. The truth Letters Patent say he can't be a Prince until Charles on the throne
H&M's claim is "The Palace said they were changing the rules so Archie wouldn't be made a prince when Charles becomes King." We have no way of knowing if that claim is accurate or not, but it's very clear that they were referring to Archie's title AFTER Charles is crowned, not before. To claim it's the other way around - that they expected Archie to be a prince from birth - is simply not what they said.
A photo emerged a few days later of Charles riding a bike with Harry on little seat and William on his own bike riding along beside them.
Maybe Charles took the boys bike riding only once as a PR thing. Maybe Harry genuinely doesn't remember this one single incident because he was only three and it's extremely rare to be able to remember things that happened when you were three. Maybe he genuinely has no memory of Charles taking him biking because it didn't happen regularly and wasn't part of his growing up. Maybe it's wrong to call someone a liar because they don't have perfect recall of every single thing that's ever happened to them from birth on.
Maybe you should ask why the BRF chose to release that photo with the deliberate intention of painting their own son/brother/grandson as a liar.
M claimed she had not seen her sister Samantha for 19 or 20 years. Samantha produced a photo with M in of her own graduation 13 years before.
It's pretty obvious they've never had any kind of relationship with each other and have had no meaningful contact since Meghan was a child. Quibbling over whether it's 13 years or 19 years is just petty. The fact Meghan even said "19 or 20 years" indicates she wasn't certain of the exact time. I have cousins I've never had any real relationship with, if someone asked about them I'd say "Oh I never really knew them and haven't spoken to them since I was a kid." But actually it's quite possible that maybe we attended a 50th anniversary party together once when I was 20 and I've simply forgotten because it was years and years ago and we barely exchanged two words.
I'm not "a liar" because I simply forgot/don't count briefly being in the same room 15 years ago.
Not to mention, we only have proven liar and scammer Samatha Grant's word that the photo was taken 13 years ago. This woman literally faked a Princess Diana-style car crash that never happened, and has lied about so many things, why are you taking her as the bastion of truth? Hell, Samantha Grant's own mother is on the record as saying Samantha is a pathological liar and a "toxic abuser" who had hated Meghan since she was born, used to racially abuse Doria, and that there was never any meaningful relationship or contact with Samantha and Meghan.