I think this is incredibly important, in some ways this instance in particular, but no one can ask for more from you
Nothing to apologize for - you're not leaving everyone high and dry, you're hanging in there and working through what sounds like a personally difficult transition.
So I'll just say this: thank you for taking the responsibility thrust on you with due seriousness. Most people don't understand the importance of community, and what we owe to it.
When you hand it over, do it knowing your part is done, fully and completely.
And if you need to step away, step away - do the exchange from a distance, and if things fall through and no one you trust is there to take it, that's okay too.
I think there's a certain amount of responsibility when you find yourself at the center of something, but that responsibility only goes so far - if you need to step down and the community won't step up, that's not on you
It's not just content though, essentially it's bots.
The problem with bots isn't just spam, a social network is defined by the interaction among the community...I think that's a fair call.
I might be up for having unscripted LLMs on the network, but repost bots are like a weird smell... It's not that big a deal individually, but it'll make the community noticably worse