I'm not sure why they think a 45 in UW is a good idea. That's basically the same width as a 48 in tv. So I don't see why you wouldn't just get an LG C2 48in and be done with it, especially given the price difference. Yes it's 240 hz, but who's gaming competitively on a monitor this size?
The $1000 for the 27 in is also ridiculous. For $100-300 more you get one of the QD-OLED UWs. You lose 240hz, but ho many of us can actually tell the difference between 165/175 hz vs 240 hz? Then there's the matter of brightness, which from the 200cd/m2 rating they gave it and the lack of mention of peak brightness I think it's fairly safe to assume that the HDR performance is not going to be great.