I thought about that as well. This would be true if team-hiromoot is not cooperating with the bot owners, otherwise the bots could simply be excluded given all their traffic is authenticated with a 4chan pass. Other chans have manipulated their stats to change how active they appear so it's really hard for me to rely upon that.
Yeah the only way I could really prove anything would be to fully own and operate the site, a task I would never take on. It might be interesting and educational for a day but without government immunity it would get risky fast.
There are non affiliated stat trackers like 4stats.io or any of the archive sites. It's pure nonsense/conspiracy theory to suggest everything is bot content now.