On the other hand, I found this link where they seem to say that ActivityPub already allows portability (so do Mastodon already?) but it is only implementation as W3C standard what lacks. https://swicg.github.io/activitypub-data-portability/
I do really appreciate if someone can tell me if I am reading the issue correctly. I am not a software developer, so I am afraid that I have missed some important concept or info.
Thanks in advance for any help 🙏
*edited to add the link and to clarify text.