If you want rechargeable batteries, just put some eneloop batteries (or some of the cheaper, rebranded ones) in the remote. They are not like the old NiMH batteries, they hold a charge for a years.
I certainly don’t want a remote that I have to throw out in a few years because the non-replaceable lithium battery wore out.
You don’t need root access to steal all of the data that your user account has access to.