Stinks? I hardly think so.
Go to the link. Yes, Mills is rated 32. But looking at the stat categories, you realize they place an emphasis on QB rushing totals and QB rushing TD's.
https://www.profootballnetwork.com/qb-power-rankings-2021/
Mills only ranks
29th in YPG with 193.9 yds; but in my opinion this is a product of the Texans limiting Mills pass attempts. Mills ranks
14th in completion percentage at 67%; and contrary to the popular perception of him mostly dinking and dunking, Mills is tied for
17th in CAY (average air yards per completion) at 5.6 yds. He's tied for
24th in TD percentage at 3.3%. The one category which is toward the bottom is INT%, where he is
30th with 3.8%.
There is plenty that Mills can improve on, but he hardly "stinks" or can be described as "horrid". The lack of TD production lies more with the lack of overall team production and will improve as the team is improved.
And I'm going to re-emphasize, Mills is tied for 17th in average air yards per completion.