I think this is a case where both views on this topic are correct.
Last year at the end of offseason I did a deep dive on all WR groups and made a post about bills having bottom 5 WR group. Most feedback was debating that and I was being negative. I was pessimistic about the group going into the year. Now I do believe that to still be true. Look at WR stats and bills feeling need to add Cooper. However, as offense bills were second in PPG and Allen was MVP. They made it work.
Going into this year I will once again say at this time, bills have a bottom 5 or right on that cusp WR group. However, I’m more optimistic because I just saw them do this last year and come so close to superbowl. Defense has been the issue and that needed to be and was addressed. They also have a fantastic o-line and a very good RB. The WR/TE room is weak but we have Superman at QB.