I more say the showrunner was gaslighting everyone because he said he got a completely unexpected twist nobody predicted when it came to Bizarro when the plot was completely set up for Doomsday. He bragged about paying tribute to a Doomsday Death of Superman panel and generally had the vibe of it being Doomsday.
That's not gaslighting, that's called misleading then
In this case, it seemed to be playful and not malicious, which gaslighting is malicious. The suit does look like something Doomsday would wear live-action
Well yeah, it is his containment suit. Don't think addressing it as Doomsday both in universe and in interviews is anything other than lying more than misleading though.
Yeah, I guess at most that would be if Todd Helbing literally was telling people they were complete idiots for not guessing that it wasn't Doomsday and it would instead be Bizarro of all characters.