Hey @fentiger@zotum.net, I was debugging something @thisismissem sent me a couple days back, and in the process of doing so discovered that Zotum.net serves context with activities!
I’ve seen hints of backfill working really well, but hadn’t seen good examples until recently. As more and more instances upgrade to the newer versions of Mastodon that support context, backfill from Mastodon instances will improve across the board.