I used Wordle as an example of a game played by the masses. There are orders of magnitude more people who play things like Wordle than things like Diablo Immortal, hence my reason for using it as an example.
But still, gaming was poorly specified on my part; I should've mentioned that a $400 phone can play AAA titles, not that a $400 phone can play casual games.
Regarding the 525 dpi, you're correct, no $400 phone will have that. People who have trouble viewing a 300 dpi screen will have to pony up for a more expensive phone.
Where we've apparently landed is that $400 will let you play even AAA titles, but will not buy you 525 dpi.
I don't play AAA games and I need a camera good enough that I can read text I've taken a picture of with. I haven't spent over $200 on a phone in about 10 years (I think it was the NA version of the HTC One X).
And if you are bringing up games, wordle is an odd choice given that it's among the lightest popular games. My counter example is diablo immortal which just came out and I played some to check it out. I'm not convinced it would run well on your phone.