I can’t show they aren’t linked, but I trust the multiple financial sites for the given reason.
You severely underestimate just how many didn’t like and didn’t care about BvS.
Here is an article discussing Justice League’s disastrous opening weekend. Notice this is only opening weekend. You can’t really blame all the changes made to JL when majority of the audience didn’t even know about the changes going into the movie. BvS effectively killed the DCEU.
Also, BVS had one of the worst dropoffs ever for a superhero film, here is the article.
I really don’t understand why you keep thinking ”internet nerds” killed the DCEU when in reality it was Snyder’s vision that wasn’t well received.
Marvel always had a good plan, DC always had a badly rushed plan.
What reasons are those?
You severely overestimate how many didn't hate or did like it.
I wasn't even that interested in the universe when JL came out and I knew about the changes. Many reviews came out before the movie did. If BvS was so damaging why did SS and WW do so well?
Yes, it did drop fast, it did have a huge opening weekend so it was bound to drop a lot. It had a 69% drop, Spider-Man: No Way Home had a 68% drop.
If there is no internet how do you know it's not liked? If you have a movie make nearly 900 million that's a success, ask the X-Men and Transformers franchise.
You keep moving the goalposts on the plans. DC didn't have one, now they did but it was rushed. Marvel had one but then you used an announcement in 2014 and now they did always have one but it was "good". Make up your mind.