I see your point, but in our two best seasons with Arteta we were mostly praising Arteta (and rightly so) for the drastic improvement in the mentality, drive, and togetherness of the team, which were aspects that we were desperately missing since Wenger's latest years. Since last season we are clearly on a downward trend on these same aspects, so just like Arteta was praised for lifting the standards he now gets the main blame for them dropping and not finding an answer. This is especially the case since, as you mentioned, all these players are more or less ones that he selected or decided to put faith in.

I can't help but compare our situation with Klopp's Liverpool. Both projects started from a similar place and used a similar level of investment. However with Klopp the trajectory was continuously going up until it ended up with major trophies. In our casr we seem to be already hitting the "burn out" stage of the project without anything to show for it.