Reese is obviously a self-absorbed head case, but its laughable to suggest she'll wash out of the league in a couple of years
1.) She leads the league in rebounding by a comfortable margin and is up there in steals as well, so she has value even with her "make a wish foundation" offensive skillset
2.) She brings eyeballs and drives discussion of a league that is desperately trying to grow awareness and you need villains to keep things interesting. The league is almost completely bereft of basketball talent and athleticism in general, so lets not pretend she is alone in that regard. Her salary is $75K. If you know anything about advertising costs, tell me the league doesn't benefit immensely from that $75K spent. Its not like she is sitting on a $40M/yr salary like Ben Simmons.
As long as her "value" to the league is orders of magnitude more than her salary, she ain't going anywhere. Unless she decides she can make more money shoving bowling pins up her ass on onlyfans, she'll have a spot to play for the foreseeable future. Simple economics guarantee that.