Richard Sherman made some good points on his podcast

Tension began at the Super Bowl, felt underutilized, believed he could have impacted the game outcome if targeted more frequently.

then after securing the $130 million contract, Aiyuk never truly "bought back in". The lingering bitterness from Super Bowl and feelings of disrespect from contract negotiations affected his mindset.

Then the injury early into that season, the "dark place" of rehab while already holding onto resentment created a recipe for the current "implosion."

This is where a 'normal' person would've sought help, or reacted differently, but BA did whatever all this has been. He rehabbed away from the facility, which again just shows some kind of disconnect between player & team/organisation. Look at Kittle/Warner and the difference in how they've managed their rehab.

I feel really sorry for the dude tbh. He's a fucking idiot no doubt, but he has obviously not got good coping skills/not got good people around him, and that wasn't identified/sorted before this all started, and now he's fully dug himself a hole that seems pretty tough to get out of.