Simple answer is that it's outside the scope of what we provide (a basic grind bot). EB is a small project, for a niche game, but requires a ton more maintenance and work than the other projects we have.
Buddy community is built up around people doing things we don't, or doing things better than we do (or don't), but it's all dependent on having a solid stable API to work from.
This update, while not having anything really new or impressive from a user standpoint (oldgrindbot/oldroutine) is simply amazing for devs. There's now support for parties, trading, passive skill allocation, a lot more game data exposed, and better tools / gui to work from, not to mention anything else listed in the massive patch notes. Bot development is not easy, and there's been major hurdles as to why EB didn't support these before.
There's no way one person (myself, as it's still only me here) can handle all the core stuff and keep the API working an up to date in a game like this and do really specialized logic and handling of that stuff. If GGG gave us a perfect API for the game, and all we had to focus on was logic, it'd be a totally different story.
I'm perfectly fine with how we do things though (which is why I'm still here) because it does give people the opportunity to do things not really possible anywhere else. Our model isn't for everyone though, but that's the nature of anything really. I'm sure there's a lot of things other people wished they could do we do, and equally as many things users wish we did as other people do.