If the point of an anime is to attract players to the game, then I'm pretty sure 95% of the new players will be driven away within a month once they realize how much FUCKING GRINDING is in this game. No passive EXP gain mechanic, a massive wall between level 30 and 70 that makes you want to stab your eyes out, and then yet another wall between level 70 to 90.
And the only way to clear those levels without running out of materials in a day is to do "corpse grinding", the most autistic level grinding method in history of soshage that actually makes levelling slower. You will spend more time pushing the same buttons like a robot than actually enjoying the tactical gameplay, and the button pushing order is just barely complex enough that you can't even do it on autopilot while watching anime or something.
At least FGO has less grinding needed to get EXP, and less grinding for materials because of events. At least Azur Lane has autobattle and passive EXP gain.