Finally this happened!
#Friendica 2019.01 release now officially supports #activitypub out of the gate.
https://github.com/friendica/friendica/releases/tag/2019.01
From their #changelong:
''The AP functionality was tested with Hubzilla, #Mastodon, #NextcloudSocial, #Osada, #PeerTube, with #Pixelfed and #Pleroma.''
Another bunch of users to interact with... a more viable alternative to FB and #Diaspora, because #activitypub (and #zot) is the future of decentralised social net.
Thank you guys,