Thanks for the explanation, I was thinking "why not khatru" during all the video.
It's very useful to know why you decided to build a new project from the grounds up. I recall nostr:npub1fjqqy4a93z5zsjwsfxqhc2764kvykfdyttvldkkkdera8dr78vhsmmleku also had sync issues with khatru, and he also builds a relay, called 'realy'.
Now really, we have rely, realy as relays. I guess it's not easy to google them if something goes wrong... :D