Hi iGehrman,
Thanks for reaching out about account linking. There are a few important things to know before changing or removing links.
An EA account can only be linked to one Steam account in its lifetime, and that link is typically permanent. If you unlink the Steam account, you won't be able to link a different Steam account to the same EA account. Further, the Steam account you unlinked won't be free to be linked to a new EA account.
If you'd still like to unlink the Steam account, please know it can lead to a loss of all game entitlements, progress, and content. Once it's disconnected, that data can’t be recovered or regranted.
Before making a decision, I'd recommend reading our EA Help guide fully.
In cases like this, it's best to know all you can before going ahead. 🙂
EA_Lanna