And mostly whether it’s even a good idea at al, and if we should continue or not?

I think that activitypub in yarn is a great feature! And also one of the easier ones to set up and get going.
And as I said last week - I think it’s a important features - and will drive adoption.
It is optional as well - so if one does not want it - just not turn that feature on.

I personally was missing the fact that I could not easily follow others before you added activitypub, but now I can choose to follow them, which is great.