This is normal.
Firstly, EA's anti-cheat and ban appeal processes are now handled by AI. This means that regardless of whether you actually cheated, if the AI deems your behavior "abnormal," it will automatically ban you.
As for appeals, the same AI reviews them. It doesn't look at the evidence or content you provide; it determines whether it was a wrongful ban. My roommate was banned for cheating in 2023 and finally received an unban email in 2026 informing him that his ban had ended. A normal cheating ban should be permanent, but obviously EA won't admit to wrongly banning players, so most unban emails simply tell you "the ban has ended."
PS: The reason I say the review is done by AI and not by real people is because my roommate's last few appeal emails were just him blaming EA without providing any other evidence, yet he was still unbanned.
PSS: Because EA was acquired and is laying off staff, the TOS department is practically deserted. To save time, EA will now close your appeal channel if your account has more than 10 appeals. In addition to the first two appeal emails, which may take more than a day (with a very small chance that a real person will be reading them), you can even see that you automatically receive a rejection email less than 30 minutes after submitting the appeal for subsequent appeals.