Connecting Discord Account does nothing
I've followed the instructions here: https://www.meta.com/en-gb/blog/discord-account-connect-meta-horizon-profile-quest-vr-games-share-status My account is set to "Joinable" I have the discord ap...
Forum Discussion
The ability to connect your Discord account to your Meta Horizon profile is rolling out gradually, so we can squash any bugs that pop up along the way. If you’re not able to link them right away, please sit tight — good things come to those who wait.
They are still rolling out the feature. It's probably not fully implemented yet.
On headset accounts center
I'd say that will require a headset software update not yet released.
Note that in Discord, under my profile Activity->Connect Accounts, there is no option yet to add Meta.