Just a PSA that buying the 4K UHD, at least for now, will likely yield a good easy MKV backup of this release. I'm backing up now and I'm encouraged. It appears the 4K UHD disc has 1 title (00294.m2ts) that's 90,338MB. It's 4% done right now, but no errors or surprises.
The last backups I attempted were John Wick 2 & 3 and they used playlist obfuscation...I was afraid that was going to be the norm for all new releases. I'm pleasantly surprised.