Zapier makes changes on behalf of a single account. You can change the "share" permission to only allow view for anyone except for the account tied to Zapier which has edit permissions.
1) If you're piping data into Sheets, then you most likely don't have good custody practices and aren't limiting edit users to just 1.
2) Sure there's revision history but you can't "roll back just this one change". You roll back _all the changes_ to the state at that time.
3) If the marketer does appear to save new Sheets as major data changes occur, they're not properly branched. You end up with Sheets like "customer_list_v1, customer_list_v1_no_Csuite, customer_list_v2_no_CSuite, customer_list_v2_scrubbed".
As a consequence you can never be sure if the reporting is correct or if the data is up-to-date.
Especially if there's any sort of editing or data transform in sheets, there's 0 traceability of the change.