Have you tried using a synthetic oil other than Wal-Mart supertech?That's true. When I bought my 2019 as an ex-rental last year with 24K miles on it, it only had one oil change reported on the carfax at around 14K miles. The next OC was reported when the dealer network I bought it from did one when they took it into inventory @ 24K miles. It's likely it only saw 2 oil changes in 24K miles, when Nissan recommends something like 5K miles in the manual. It could have had more. I'll never know.
Like you say, pretty much any engine these days should be able to handle ~12K miles and not skip a beat (not that I'd ever go that long between oil changes).
After I took delivery of my PF, I noticed the engine oil looked black and immediately changed it. The filter I took off was basically brand-new (aftermarket) so I do believe the oil was changed. That's when I discovered these engines turn the engine oil black almost immediately and is why I recommend not exceeding 3000 miles between oil changes with them as much as a pain in the ass that is. I record my oil changes on the "my carfax" app, but don't keep receipts, or take pictures, etc, so I assume if my engine sludges before 60K miles, I'm screwed.
I've been using walmart supertech synthetic 5w30 (not the recommended 0w20) and Nissan filters. I bought a case of 12 nissan filters online for pretty cheap.