First, coming here isn't going to change anything. He has to go through the appeal process as explained in the email he would have received. Any attempts to appeal in other ways won't work.

While I have no doubt you are all honest and accurate about his hunt activity, I suspect your friend may not be sharing all the relevant information honestly with. There are some suspicious things about what you're saying he's told you.

- Just because someone says they play on PS4/5 does not mean they don't also play on PC as well. I have several friends that play using both, usually depending on whether they're at home (PS) or traveling (laptop PC). Or it could be they're lying about playing on PS4 altogether, though if what my PS friends have told me is correct that could easily be confirmed if you're also using PS and are friends on PSN.

- A check on google shows that a very simplified form of botting is possible on PS4/5 using a programmable mouse in place of a controller (didn't see any results related to programmable keyboards, all the results were mouse specific). While I'm sure your friend's hunt related activities are on the up and up, what is he doing in his downtime? Even KC spawners have some downtime on occasion.

- GMs aren't going to care about how much amra is dropping or what your friend does with it. That your friend would even bring it up is a sign that they're trying to spin a tale to cover for the real reason.

- If GMs were banning players simply for working on KC spawns, we'd see a lot more spawners getting banned on a regular basis.

There's always the chance that what your friend is telling you is 100% complete and accurate, and that the GM was poorly trained for doing botting reviews but as I said at the start of my reply coming here does nothing to help. It has to go through the required appeals process. You're not going to get your friend reinstated by making a forum post.