What I mean by that is that the showrunner of Helstrom said that the show is not canon to the MCU, but is that a Legion or a Your Friendly Neighborhood Spider-Man situation. The former is a show made by Marvel Television with no association to the MCU at all, the latter is a non-canon show that is a part of the MCU (franchise).

Helstrom was meant to be a part of Adventure Into Fear, which was Marvel Television's horror brand, and was meant to connect to an Agents Of S.H.I.E.L.D. kind of spinoff in Ghost Rider, alongside two other shows in a The Defenders-like crossover, however those plans fell apart when Marvel Studios took over, Helstrom was released without the Marvel branding, and was essentially just another show on Hulu.

So when it comes to Helstrom and the MCU, is it a Legion or a Your Friendly Neighborhood Spider-Man situation?
When it comes to the MCU, Is Helstrom in a Legion or Your Friendly Neighborhood Spider-Man situation?