The UI/UX is a bit bad as the user flow is mangled. i would advice adding one of the new strong captchas and upon failure, redirect the human towards the human page and the bot towards the bot page.

It’s not clear just what you are trying to accomplish. Is the bot signup field a tripwire to detect and prevent bots or do you legitimately allow bots in the same way Lemmy does?

Either way, I think your intention can be better expressed in other ways.