Discussion Moderators, for which he is one, possess the ability to lock posts so that no one can comment on it anymore. This is usually done if a post ends up turning into some continuous spam that is not wanted, or if someone has a question and it's answered so the post doesn't need to continue etc.
Marvelus made his post as an alert to everyone to not make any Spider-Man returning to the MCU posts after one had already been created (for obvious reasons). Now, this post was only an alert and did not require anyone to comment of it as it was not made for discussion. So, Marvelus locked his post, leaving it as it is, so people would only be able to just read it.
They weren't common, but there have been plenty. I'm not able to go through everything to find them, but there was never a time when they weren't allowed. There was a whole thing where we caused the X-Men (amongst other characters), as well as casting specific actors. They've all been fairly successful posts.
I just found your uploads from twelve days ago... you didn't bother doing it then... either do it, or get an official warning... If you're going to upload the images you're obliged to put them into all relevant galleries, not leave them for other people.
Like every actor casted in a Marvel movie before they are oficially announced. It happened with Michael Keaton and with several others. Variety is the source that confirmed Civil War before Marvel even spoke about something, and Variety confirmed Milly's involvement. I might be wrong, but it still shouldn't be removed. Wait for SDCC
When you look at the individual articles for the Chitauri, Sakaarans, Outriders, etc they all say they went extinct when Iron Man killed them. You say that the articles are wrong but how do we know any of them survived, and if the articles are wrong, why aren't they fixed?
Michelle is a new character. However, she is drawn from MJ in the comics, the director and Zendaya have said that. Just because their name is not the same (which there are plenty of examples in the MCU of characters with different names), she is still inspired by that character of MJ. Drax isn't actually called Arthur Douglas, but that is the character he is based off of. They changed the character from the comics, but that doesn't change the that it is that character. Same with other things like origins, powers, personalities. Captain Marvel didn't shoot an energy source in the comics (as well as Mar-Vell being a women), but that doesn't mean she is not Captain Marvel. Ultron wasn't created by Iron Man and Vision can't lift Mjolnir, but that doesn't change that they are still the same characters.
Enough. You're both acting like you are the two sides of ultimate power over what should happen with this stupid conflict. You're not, you guys barely have any power, and the admins will very likely just ban you to spare us of more of this. I don't really acre any more who's right or wrong. I didn't know that clearing something up would continue into this mess, and I recommend you take this childish argument out of Marvelous' wall, at least be respectful for that. Now stop it.