it 100% is that people expect him to be the 50 kills on icebox reyna like he was when he came into the scene, but much like TenZ ended up doing, he is most effective when in a supporting role.
I also think the teammates around him arent necessarily an issue, but their agent pool forces him to play subpar agents rather than ones he is best at.
Ive watched every game since 2022, and I can say that Asuna in that time has played fade, skye, kayo, gekko, tejo and yoru to a good standard, even if the sample size isnt too big. The only initiators he isnt great at is breach (who he played) and sova (who he hasnt).
If Cryo could play all duelists and zikz was willing to put eeiu on breach, then we'd be speaking about Asuna as a guy who is a really good initiator, but unfortunately cryo cant play raze or neon particularly well, so Asuna is forced onto Raze and Neon where he just doesnt have the mechanics to play both of those agents well.
I think that Cryos ability to play Yoru could transform 100T if he cleans the util up a bit. They'd look 10x better putting him on Yoru/ Jett or Iso on every map and just running eeiu breach and Asuna tejo, with Boostio on second controller or sentinel