It is weird. And since you read the Steam comment and my comment here, you'll know that it's not happening on most modern systems, which is what makes tackling it difficult, especially since it could both be an optimization issue and a user created issue at the same time.
Outer Wilds doesn't do the same things that TCFDX does, so it's not really a good comparison. I'm not sure that there really is a good comparison, other than maybe Aliens vs Predator, but even that's difficult to compare to since every actor in TCFDX is performing gravity transforms. I do have a few guesses as to potential CPU bottlenecks.
On your side note: In my experience working customer service and tech support for a decade, people typically only provide feedback when they're having problems, and most people refuse to believe they are at fault in some way (whether it be missing updates or contracting malware or bad system configurations or faulty hardware, etc...). It's when people aren't having problems that they typically don't leave feedback.
I know there are optimizations still to be made that I'm actively working at, but some of the issues reported by a very small percentage of the player base are difficult to tackle because no pattern has actually emerged with their performance issues and bugs and I don't have quite enough information, so it's basically one dev fumbling around in the dark trying to solve issues that are unlikely to be the problems the game actually has.
But, like I said, I'm trying to fix the problems I know it does have and hopefully it'll solve some issues for some people.