I think it’s fair to be sceptical. I’m not aware of other services having retro fitted activitypub (are there any?) so it’ll be a good test of the protocol and

I think it’s fair to be sceptical. I’m not aware of other services having retro fitted activitypub (are there any?) so it’ll be a good test of the protocol and any claims it will lead to more interoperability beyond Mastodon instances.