I am able to access the data folder which is located in Internal storage/Android/media/com.whatsapp. This is without root using the AOSP files app, not sure if that’s what you meant.

It can be implemented well but often isn’t. Likely eID will force you to use an mobile app (no website or Linux app, yay) that is only available on Apple’s app store or GPlay. And if you want to run a degoogled android ROM good luck with that when they force Play Integrity. Basically shoving everyone into either the Apple or Google walled garden along with the complementary spyware of both gardens and also screwing anyone who uses a non-smart phone either out of choice or circumstance.