>>25080948Her usage has dropped for a reason: the meta is pretty unkind to her with warp types being everywhere, her poor type coverage and bad base 75 speed leaving her dead in the water against several top threats, quite a few of the things she could prey upon having died off in popularity themselves, so on and so forth.
It's worth noting that her usage rose compared to the previous week by .5% and she's still on nearly 3% of teams (for comparison, HinaE is on 14% of teams), so it's not like she's disappeared entirely or anything. She still is near impossible for most physical attackers to break through without exploiting weaknesses (and with a Golden Hairpin usually that isn't enough either) and hits like a nuke back. SukunaD is in spite of everything still really good, it's just she has much more competition for a team slot than she used to (especially with HecatiaE being a thing now).
I just assume her waifu outfit makes her so cute that people just don't want to use her anymore out of fear of seeing her get hurt and faint.