abirdcall
(she/her)
If we're defining getting a certain ability score to a certain number, than yes, floating ASIs is about powergaming, because setting ability scores is powergaming.
If we're defining powergaming as only building the character for power, than floating ASIs can definitely be used for other things, such as playing characters who don't follow standard tropes without being weakened for it.
The funny thing about the floating ASIs is that it eliminates the ability to play against type.
There is no longer an option to not follow standard tropes because those tropes have been destroyed by the rule.