Honestly, I’d consider it.
If I was in the middle of a job and was about to run out of something, I’m looking at downing tools for a minimum hour round trip to the nearest (decent) hardware store.
There’s a good chance someone starting closer to the store can get that down to 35-40 minutes, and I can carry on working in the meantime.
Now “normal”, perhaps not, but unreasonable also perhaps not?
Presuming you mean 4x 2560x1440 there, you can have close enough to that pixel count today; one of the things Dell released at CES this year was a 52" 6144x2560 display (U5226KW).
Since it’s intended to be a monitor, you get a USB hub, DisplayPort, Thunderbolt, and other things you wouldn’t get on a TV, too.
I’ve been looking at it longingly, but I can’t quite justify that pricetag right now.