just tried a small experiment to make an activity pub feed from https://hyphalfusion.network
discourse has an interesting feature that you can get an rss feed from almost any view,
which makes for some nice rss feeds like https://hyphalfusion.network/latest.rss
(showing all the latest topics, with full posts and nice images and formatting)
then I tried to use feed2toot to make a mastodon feed from this rss feed,
but I could only get it to show a summary of the post, not the full post, and it doesn't render images, which seems not great to me