This is horrible and makes migration from SharePoint to Dataverse impossible on an existing PowerApp. Seriously, I don't understand why non-value-added layers of complexity are being added. IT IS A TABLE NAME! Every time I try to make a move to dataverse, I find yet another ridiculous roadblock.
Dataverse, import from SP online.
PowerApps, drop SP data source table / list.
Powerapps, add dataverse table. Doh, its plural (app broken).
Go to dataverse, edit plural name to remove the RIDICULOUS plural form that PowerApps defaults to! Go back to Powerapps, add table from dataverse.
This is completely irrational for an app built on dozens of tables.