Not him, but I think most people assume movie because the entire series is in movie format and it’s almost completely unheard of for a canon movie to be followed up by a tv series. They also still use Madoka Movie Project copyright on the official concept movie material.
Secondly, Shinbo and Urobuchi have said over the years that they’re struggling on ideas. Shinbo said in the final regular issue of Kirara Magica that they’re still putting together ideas together, which means a scenario and script weren’t even close to being done back in 2017. Rebellion was ultimately a movie because they couldn’t pull enough material to make a season 2 and this will likely be a movie as well for the same reason. As epic and grand as everything might seem, it ultimately comes down to the same clash of ideals between Madoka, Homura, and Kyubey that the anime is built on. The origin of witches are no longer a mystery and we already know the world is fake, so there’s much less to drag out a 2 hour movie, let a lone a 12 episode series. Wraiths and Devil Homu are our only real wild cards.
-lack of material for a full 12 episode series
>Source of that info?
Kirara Magica 20.
>Madoka Grand Order
Yeah, Kirara Magica never impacted the anime continuum before and we’ve had 2 mobage games since the 2011 series, so Magia Record’s existence is pretty irrelevent to any sequel discussions.