Okay let's make this clear with Tua.
Is it factual to say there were times he clearly either didn't trust his eyes or receiving options? Yes
Is it factual to say there were times he needed to be quicker on throws? Yes
Is it factual to say that Tua was effected by having no real offseason coming off a very serious injury? Yes.
Is it factual to say for much of the last month of the season we had an awful WR room? Yes
It's fair to criticize Tua there were things he clearly has to work on, but if you are going to criticize him you also have to criticize Gailey (who I believe even as late in the season as December he still said he didn't know what plays Tua worked best with) and you also have to acknowledge that in December our receiving options at times were 3rd and 4th string guys.
Getting Will Fuller, Jaylen Waddle, Malcolm Brown, Hunter Long, and even a guy like Robert Foster should tell you that the team wasn't happy with the skills players