That quote is referring to different movies and shows not part of the MCU, like X-Men and so on. Not once does it refer to Agents of S.H.I.E.L.D., and it equally applies to the Netflix shows, which, funny enough, refer back to Agents of S.H.I.E.L.D. with Cybertech, Carl Creel, and Micro, as well as Cloak & Dagger that connects to Agents of S.H.I.E.L.D. through Roxxon and Runaways -> Agents of S.H.I.E.L.D. once again.
Yes, but not in all regions. Only in specific regions has that been applied. In the US and UK, it isn't part of it. Well, why? And if we're going based off of other countries, I recall a Disney+ Latin promotional video that places Agents of S.H.I.E.L.D. in the MCU, featuring the Peggy Carter flashbacks in Season 2.
Their statements about it heavily imply that they seemingly only realised it was problematic for fans recently, as strange as that is, and that it was ALWAYS canon, they just couldn't connect to it previously due to schedules and story plans.
I'm not talking about a wiki or them copying anything from the wiki in a movie. I'm talking about Marvel.com themselves adding completely new text that isn't copied from anywhere referring to events from Agents of S.H.I.E.L.D.
The thing is, every single show has been confirmed canon before. The only reason why people think that they aren't is mainly due to huge clickbait and misinformation rather than anything based on fact. When the Netflix shows were "confirmed" canon, my reaction was that I have seen it serveral times before, even by Fiege as recently as 2020.
Even before that statement, when the Adventure into Fear brand was announced, they intentionally made it clear that it wasn't connected to it while being set in the same universe. Quite obviously, when they're saying it's tied to a "Helstrom universe" and a "Ghost Rider universe", they mean that it isn't tied to other stories. If you take it literally like so many have before, they're calling Helstrom and Ghost Rider different universes. When they state that it isn't tied to the canon, they're not saying it isn't canon, they're saying it isn't connected to the canon (as in, narratives and stories) of the MCU.