Hi everyone,
This thread got quite some traction during my weekend and I've been reading through all your posts.
First off, Dan seems like an absolute legend and got it spot on!
The main theme of this thread is that players like yourself linked an Xbox account to an EA account ages ago, but never really used it. You then created a new EA Account to play EA games on Origin, without knowing that you owned another EA account or that another Xbox Account was linked to the EA Account that you played Origin Games on. Now you can't link your Xbox Account to your active EA account and you'll have to manage 2 or 3 EA Accounts to make full use of EA Play through the Xbox Game pass on EA Desktop. From what I've seen here, you don't really think that's ideal.
It's true that unlinking account is a recent feature. In the past you weren't able to unlink accounts. There was the possibility to go through support to remove the link, but that was only done in some of more extreme edge cases. With the new feature in place, you'll be able to remove the link between you Xbox and EA Account, but you can only the Xbox Account to a new EA account once every 6 months and only to an EA account that hasn't been linked to an Xbox account previously.
You've also mentioned that some players have multiple Xbox Accounts linked to a single EA Account. That's also something that was possible in the distant past, but it hasn't been possible for quite some time now. This isn't a bug, but just an older functionality that's no longer possible.
That being said, I've gathered all your feedback and I'll be sure to pass on your concerns and desire to link your active EA Account to your Xbox Account. I cannot make any promises that this will be changed, but I can promise that your feedback will be passed on to the relevant teams.