Here’s the whole rumor, in full: something isn’t going well.

That’s it. That’s the story that’s been ricocheting across every Marvel aggregator this week. YouTuber John Campea closed out his latest video by saying, “I am certainly excited for Doomsday, although…I’m hearing it’s not going so good.” He didn’t elaborate, but promised to share more details on his next show. No specifics. No sourcing. No follow-up yet. Just a vibe, dropped at the end of a video, that’s now being treated like a five-alarm fire for the biggest Marvel movie since Endgame.

Why This Rumor Landed So Hard

The reason a throwaway line like this travels is context, not content. Despite all signs pointing to Avengers: Doomsday being one of 2026’s biggest hits, fans have grown increasingly frustrated with the radio silence from Marvel Studios since December and January’s four teasers, with only the odd leak in terms of officially released material — even after a full trailer wowed CinemaCon attendees back in April. Attendees have seen it. The internet hasn’t. That gap is exactly the kind of vacuum a “not going so good” rumor fills instantly.

And to be fair to the skeptics: this isn’t a small assignment. The Russo Brothers need to wrap up all the Multiverse Saga’s loose ends while making it accessible to audiences who haven’t seen everything, introduce a new villain in Robert Downey Jr.’s Doctor Doom, and balance a huge cast of characters who each need their moment. That’s not a script problem you fix with reshoots. That’s a structural tightrope, and post-production is exactly where you’d feel it if the movie were struggling to find its shape.

What Would Actually Prove It

Here’s the thing about a rumor with zero elaboration: it’s basically unfalsifiable until Marvel opens its mouth. And Marvel is about to.

Marvel Studios has confirmed a Hall H presentation at San Diego Comic-Con, and the first Avengers: Doomsday trailer is expected to premiere there. Considering the extensive wait for a full trailer, the Marvel Studios panel at San Diego Comic-Con at the end of the month seems like the most likely place for it to finally premiere, with footage having only screened at various events over the past seven months. That’s the actual test. A studio sitting on a movie that’s “not going so good” doesn’t usually walk into Hall H and hand the internet its first real look five months out from release. Either the footage plays and looks incredible, or the silence continues and the rumor gets a lot more credible by default.

So here’s the real question, not the manufactured panic: is this actually a warning sign, or is it just what happens when Marvel goes quiet for seven months on its biggest bet of the year and the internet fills the silence with something to talk about? We find out at Comic-Con.