Dedicated 4K UHD Blu-ray Player or Xbox One X

[Kage]

I recently returned the Apple TV 4K due to its fake HDR10 processing on all Dolby Vision, 4K SDR, and HD content on HDR10 tvs. I decided to go back to physical media only for 4k UHD movies and games. I currently have an Apple TV 4 for my HD streaming purposes. Lately I've being considering to buy a 4k UHD blu-ray player again. I used to have one then I sold it to go all streaming.

About a month ago, I preordered an Xbox One X and my intention is to use it as a 4k UHD bluray player, to play games, and have it as a 4k video streamer. Now, I'm thinking that I should get a dedicated 4k UHD player due to people stated that the Xbox One S 4k UHD blu-ray player has issues with disc playback. My Sony 55X930D tv does not support Dolby Vision, just HDR10. I've been looking at 4K UHD blu-ray players for under $250 such as the Sony UBP-X800. I'm confused right now. Should I use my Xbox One X when it arrives in November to play 4k blu-ray movies or should I get a dedicated 4k UHD blu-ray player?