Yes it is. As someone who remembers the halcyon era when years could go by without a superhero film, I think it's time to call a halt to this madness for a good long while. This genre needs to be drastically culled, and money spent on interesting, creative, incisive original projects. Of course, those are plentiful outside mainstream Hollywood, but I do wish Hollywood would take some proper creative risks again, akin to the 1930s and 1970s (and even the 1990s).
Thankfully, there are still a few exceptions - Christopher Nolan, Jordan Peele, and of course, Spielberg and Scorsese are both still going strong.