I’d love to be able to watch the Blu-rays I own via my USB Blu-ray player
It works, I have done it. Just make sure you have a libaacs KEYDB.cfg installed correctly and most movies will start working fine. Just not ones with bdplus or with unknown keys. If a unknown key it would be up to you to get it and add it to the keydb.
I’m not explaining any more I recommend Google to find out how to do that stuff.