The fact that he creates his poison pool after Chad attacks him is one reason.
And the fact that he did the same thing to Yourichi's brother after getting owned by him.
Take in the fact that Ichigo was suppressing himself and can't control his massive Reiatsu reserves very well at all so he is constantly leaking Reiatsu out of his body.
It's not a ridiculous conclusion to make. And even if it was just the Reshi in the atmosphere, who cares? Hax is hax. NaNaNa's hax affected Aizen, and Aizen got mollywoped by Yhwach in their fight. Why aren't you complaining that Aizen in the TYBW is also a jobber?
Really tired of your attitude on this version of Ichigo. If you don't like him, that's fine, but leave it alone and don't make false statements. It's very annoying.