Has anyone tried a Dell UP3218K w/ macOS?

Now that the 2023 Pro-level Mac hardware supports HDMI 2.1, Apple officially supports 8K displays with Macs: Use an 8K display with your Mac - Apple Support

The only consumer 8K display I’ve been able to find is the Dell UP3218K (costs around $4,000).

I am curious if anyone here has tried it and could share their experiences? I am especially interested to hear about 3x scaling mode in macOS and how well-supported it is.