No, no, and still no. Installing an app on an Android device you've purchased and fully own is not "sideloading". It's just... using your device. Nothing more. Let's not pretend even for a second that "sideloading" is a normal term to describe this.

0
2
0

If you have a fediverse account, you can quote this note from your own instance. Search https://androiddev.social/users/zsmb13/statuses/116260287938201695 on your instance and quote it. (Note that quoting is not supported in Mastodon.)