PowerApps access requests are currently sent to the application owners, which is not ideal, only as a default.
My PowerApp is shared with an Office 365 group, and I need access requests to be sent to the owners of that O365 group.
I develop the app, but I don't approve/reject access requests, so I have to forward them to the appropriate people, and I don't want to make them owners, and even if I would, I would still be receiving the access requests.
In SharePoint you can specify who should receive access requests for each site, something similar would be required here as well.
That would be overkill. As a temporary workaround I created an Outlook rule to redirect these e-mails, but that's not something that MS should expect users to do.