Are they?
Lets talk through the issues.
Butterfly keyboard. Failure rates in the 2016 and 2017 models were significant enough that Apple was compelled to institute a repair program, and update the keyboard with a silicone cover. That cover may not be working fully because we do see members here complaining about the keyboard on their 2018 MBPs and MacBook Airs are failing. That tells me, that the keyboard is flawed by design, not due to a manufacturing defect that might affect some people.
T2 crashing, like the butterfly keyboard, I've seen people mention that the MBA, and Mini are having stability issues related to the T2. I was one of the fortunate ones who didn't run into any of the issues, but I also did not upgrade to Mojave nor did you put the computer to sleep (seems sleep may be one of the causes).
coil whine and static speakers, I can't speak personally about these as my MBP did not have them, but many people do, so I raise them here only to say when there's smoke there's fire
Vega GPU screen flicker Some members are complaining about the new Vega GPU causing screen flicker - some report that it can be (or has) been fixed via software.
Throttling/cooling The thin design of the MBP has inhibited cooling to the point that many people seem who own the 2.2 base machine enjoy a cooler and faster running MBP. There's many benchmarks that seem to indicate that the 2.2 is running faster then the i9 and/or if the i9 is faster, its not by much, even though the price is much higher. This isn't too surprising and Dell is dealing with the same issue, the hot running i9 cannot be cooled adaquetly without a redesigned thermal solution. Apple nor dell did that and these CPUs/GPUs run too hot
Any one one of these issues would raise a red flag, yet there seems to be an over abundance of problems inherent in the MBP, and since Apple sells these as premium laptops, I personally question whether spending almost 3k on a premium laptop that has so many listed problems. True not everyone are having these issues, nonetheless I think its worth noting. This is just my opinion but I'd rather not deal with the potential failure of the keyboard or the stability problems of the T2