It doesn’t require you to use Facebook though. They might use FB analytics or tracking, but probably dont, or only for very few users.
Exodus Privacy detects trackers in apps, here is their report for Ally: https://reports.exodus-privacy.eu.org/en/reports/com.ally.MobileBanking/latest/
Many other apps contain way more and worse trackers, just some Amazon and Google Firebase is on the light side.
Somehow they might got a special version of the app. Really really unlikely though, it’s probably just A/B testing or false logs.