The difference though is T'Challas tech though so.e may appear to be an ass pull, it's still things or close to things we have seen in the past. The solar flare used with Stark Looks to be an extension of the force push, just like the consecrated napalm blast. The gamma shield is an extension of Hickmans energy shield. Energy swords from the daggers, etc etc. It's not so ass pull.
Shuri all of a sudden being able to change sizes have super strength from past Wakandans that AREN'T black panthers yet are somehow older then BPs and existed long before them (even though bashenga was supposed to be the one from The start) completely stupid ass pull, especially because when she was getting her powers from the start she had 3 and there was no sign of other's.
There are better ways to give magic. She could of learned from zawavari, she could of learned magic in a way that doesn't isht on the mythos or give her qotd powers but Coates HAD to isht on the mythos, he couldn't resist while saying that her power is superior to T'Challas through complete ass pull and giving her T'Challas personality and claiming T'Challa always wears his heart on his sleeve while Shuri is the pragmatic one. Which is completely opposite of what's been established