Officially? Yes, unfortunately. 4K is even more complicated. Technically 4K is the same discs, but sometimes they use the rare BD-XL 100GB discs that not all drives can read. There's also a bunch of extra DRM junk, so for 4K you need a new drive, new software and an Intel CPU from a specific time period as new ones don't include the bits for 4K Blu-ray DRM.

Unofficially you use MakeMKV and just rip the disc.

EDIT: Oh, apparently PowerDVD no longer supports UHD Blu-ray either so even the official way is dead now.