I like to stay to the evidence. Despite all the rumours I will always defend canon because of several factos: Feige saying the Netflix series are part of the same universe, Feige addressing AoS as MCU continuity, Cloak & Dagger being first announced as presenting the MCU version of Cloak and Dagger, and Runaways connecting to the other shows, and Marvel Entertainment's last Tweet for next week that says how AoS was the point of convergence between the shows and films, mentioning Runaways and the films.
I am a very factual man. Those are facts. The only show that has been declared (whether we like it or not) to not be part of the MCU is Helstrom, however, also saying it is part of the MCU World, the MCU one-off, the MCU miracel baby. So it can be part of that world it is because it is part of the franchise, but not part of the canon of the films. That is evidence.
As an essay allows the writer to take liberties in interpretations I decided that the best option to have Helstrom as a part of the MCU world is by having it have its own little pocket of that world, out of the canon of the films and TV series, and being set in its darker version.
Do not worry, Helstrom will always be MCU canon, in the same sense "Team Thor" (confirmed to be a parallel universe to the MCU), "What If...?", and "Loki" are. The MCU is now expanding. So you won't have to remove Helstrom from anywhere.