You say you don't dislike Lois, but you couldn't prove it by much of that post. At best, it sounds like you maybe find her tolerable as long as she minds (what you perceive as) her narrative place. Fortunately, many modern adaptations are not quite so regressive in their approach to one of pop culture's most enduring and dynamic female characters -- to your chagrin, and my delight.
If you think Gunn is going to sideline her in Superman '25, however, I think you may be disappointed. I expect she will have at least as prominent a role as Amy Adams did in Man of Steel -- probably more so. Gunn's too smart to try to put Lois Lane in a corner, or an actress of Rachel Brosnahan's talent and appeal. Why would he bench his best players?
I don't think he's going to let a side character overwhelm a movie filled with much more interesting actual heroes already. I'm not saying she won't be there, but she won't be a focus of the movie. She might be more important then just being around to explain that Clark's mother's name is Martha though, easily making her more important than Amy Adams' Lois was
Also, its not "regressive" to want a Superman story to be about Superman and not his non-powered news reporter love interest. Comics like For the Man Who has Everything, All Star Superman. or Whatever Happened to Truth, Justice and the American way, are stone cold classics with limited to no Lois appearances. Then there are all the books where Superman is in as a big character but not the "main" character that rarely even mention Lois.
Really, in comics its harder to find a popular/famous Superman story where Lois plays a big role, much less is particularly important. This is because people buy the comics for Superman, not Lois, and he should get the same priority in adaptations instead of the boring news reporter who steals the spotlight because its easy for lazy/bad writers to write a story about a news reporter with no powers then it is for them to write a good/cheap to make Superman story. If they could do a show with Superman were it didn't cost them a bunch to show him using his powers I bet Lois wouldn't be hogging the spotlight so much of the time.
Yeah, I can't imagine Gunn would have cast someone like Rachel Brosnahan, if he wasn't going to be giving her a big role in his DCU.
You say that like Rachel Brosnahan is some A-lister that everyone knows and wouldn't just be playing a side role. I'm sure she's a fine actress, Gunn always casts well, but her biggest role is in an Amazon Prime Video show and her biggest mainstream movie roles are a small supporting role in a mediocre Disney made Coast Guard historical movie and a voice role in a bad Blue Sky animated movie. She's firmly below the "celebrity level" of, say, any of the main GotG cast (including Batista), she 100% would make sense as a side character with limited screen time.
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