Linking to X is completely busted. I might have to update the damn Misskey Summaly and I certainly don't look forward to it lmao
ひげ
@veru youtu.be link previews still don't work over here so i have to make sure to copy the url in the address bar instead xD
WHY DEY DO DAT TO MUH SAIL FOAM CAIN BUHLEE DIS IS HAPNIN RIGH NAO SWEAH TO GAWD ON GAWD BRUH YAW BETTUH FIX MAH MUTHAFUCKIH iFOAM BITCH I'MA GITCHO ASS 
@beardalaxy@gameliberty.club Holy shit, thank you for this! It's funny because I thought that embed fix only worked for Discord; it works decently on my Misskey instance too now that I tried it.
I still want to try and fix it but I'm gonna use the embed fix in the meantime. Youtube previews are supposed to work since Misskey.io has everything working properly but they apparently run a custom version of Misskey anyways, so I wouldn't be surprised if they had a more optimized Summaly that is always fixed for when Youtube inevitably breaks embed previews.
I always use the stupidpenisx one on Discord.
I have been troubleshooting this garbage for HOURS and the two Misskey Summaly services used by most people (one main and other fork) have either Youtube previews broken OR X previews broken.