@pixelfed @Undead_Zeratul I haven't seen those posts/replies, but maybe they're coming from the fact that the Mastodon® software only displays a maximum of 4 photos?
All other Fediverse software can display more than that regardless it their attachment feature is limited. So, a Mastodon® user have no idea they're actually missing a lot.
Maybe, Pixelfed can automate a short line "this post contains more than 4 photos, see more at LINK_HERE". 😁 Like what Bridgy and Wafrn did when an AP post is longer than ATproto's max 300 characters.