Soooo, when my email client is text-only and doesn't show me the attachments from the multi-part, it's "actively destroying the Fediverse" ? Ploum doesn't make any sense here. A "platform" such as Mastodon, Pixelfed, Peertube etc. (Do not mistake with "client", there's multiple Peertube "clients" or "frontends" for instance) using ActivityPub shouldn't have to implement and provide the user with the whole spec, otherwise just make the "ActivityPub" platform, implement everything there why even bother making other platforms?

The email client might not show attachments, but will still let you know there is a message. Pixelfed is not letting the user know there is even a message.

Also you seem to be responding to the original post or just the first paragraph of this post. He understands the differences and the way he sees the differences is the whole post.