TL;DR: 99.99% sure this will not work because reasons. You'll want to rip the Blu-Ray first and play it as a normal video file instead.
Very likely this will not work. Blu-Ray has a lot of extra 'moving parts' and DRM stuff that the TV would need specific functionality to support direct playback and I doubt any will have this for such a niche use case.
There have been some external DVD drives in the past capable of this, but they have internal hardware to essentially 'translate' the DVD content to a normal video file on the fly that the TV or other attached device can more readily play back. DVD's are also a lot easier for this functionality to exist as the DRM mess on that side has long been defeated and the disc layout isn't nearly as complicated.
Let her rip
Rip the disc that has your "family video".
The secret ingredient is crime
https://www.youtube.com/watch?v=FnwynmT8GVI - here's a guy getting an old-school DVD player working via USB. NFI how well that'll work for your h265 stuff in presumably a different disc format.
But yeah, for legitimate home movies you've recorded, dump 'em on an external HDD, back them up to the cloud, and then plug it in to the back of any of the Android TV boxes.
There have been some external DVD drives in the past capable of this, but they have internal hardware to essentially 'translate' the DVD content to a normal video file on the fly that the TV or other attached device can more readily play back.
This is the thing that always got me about blu-ray, it’s easier to rip a disc than play one.