I don't think it's got anything to do with the film. It's the studio and their expectations of demand for the format. 3D is dead and that's that really. Disney aren't interested. Universal and Paramount haven't issued one in years, i can't even remember the last. Sony haven't released one since FFH. It's only WB left doing it. Well, and the last 3 MCU in Japan for whatever reason.
I get all your points. I know that Disney has announced to release lesser physical media because of their Disney Plus channel. Sony has also announced to release lesser movies on blu ray. But if the market for 3D blu ray is that small, then why do studios keep release movies in 3D for cinema's(thank god for that)
just a few example of what is still released in 3D (conversion mostly) in cinema's
Dark Phoenix 3D
The eternals Imax 3D
Black Widow Imax 3D
James Bond no time to Die was released in cinema's in 3D
Spiderman No way home Imax 3D
Dune Imax 3D
wonder Woman 1984 Imax 3D
Godzilla vs Kong 3D
Monster Hunter 3D
Spiderman into the Spiderverse 3D
people still must be being these cinema tickets for 3D , at least I am
these are still investments that studios do in 3D conversion , then why not have these investments pay out and use these in releasing the 3D conversion