The premise of this thread can be scrutinized in at least five different ways, such as when NRS patches the game frequently and prematurely, the company is criticized and mocked by the entire fighting game community. The developers seem to have changed their patching mentality and are apparently allowing the game to evolve at this moment. Nonetheless, people continue complaining.
I am also certain that if Aquaman or Black Adam ever get normalized, other buffed characters will take their place. These characters, whoever they may be, will become ubiquitous at tournaments so the community will continue complaining, similarly to how the community demanded that NRS buff Takeda but quickly changed their attitude toward the character as soon as he became popular in tournaments.
The community also blindly follows top players' opinions and tier lists. When Sonic Fox, for example, posts his top ten list, a majority of players in the NRS community decides to drop the current character and use one of the listed characters whom Sonic Fox perceives to be top tier. As a result, players stop exploring and the meta stops progressing. Ironically, the individual who stuck to his main character, considered to be low tier by most players, has just won the largest Injustice 2 tournament to date.