I gotta say this really annoys me. I have a 2018 15" MBP and, thankfully, I bought AppleCare+ so this shouldn't be too bad financially if it eventually has the problem. However, the time without my laptop is super irritating when they have to send it away for repairs. My 2016 MBP had a logic board issue and they had it for five days. I use my laptop daily for work so that's annoying.
The other thing is that I am a computer consultant (have been for 24 years) and I have had to replace the screen/video signal cables more than once over the years on Windows laptops and MacBooks and it's usually a fairly easy process. The fact that they soldered it to the display unit is the biggest issue. Sure, cables that undergo repetitive motion (opening and closing) will most likely fail at some point. Why couldn't they have just used one of the little plastic locking mechanisms like many other laptops. A $30 cable is now a $600 display and the display unit itself is most likely fine! So annoying. Almost criminally so.