Both of them stem from teachings of the Church of Jesus Christ of Latter Day Saints ( of which I am a member) the first is the emphasis on families. A commonly heard refrain is "no success can compensate for failure in the home", this emphasis on family doesn't always meld well with eh working 80-100 hours a week, FAANG obsession mentality that is caricatured as part of being an SV startup.
The second is also another teaching of the Church of Jesus Christ of Latter Day Saints that counsels it's memebers to avoid excessive debt. Whereas the entire SV startup mentality is get as much VC as you can and blow through it as quick as you can to fuel growth hopong you can claw your way out later. As data point on this until a while back I was working at ones of Utah's biggest, hottest most profitable startups as one of the first employees. The CEO didn't take out a bunch of business loans or get VC, he had owned quite a bit of property and liquidated it all to start the company.
Now the objection will be that everyone in Utah isn't a member of the Church of Jesus Christ of Latter Day Saints, however the culture still is pretty pervasive.
That being said there are exceptions to every rule and things are changing. But most importantly.
There are too dang many of you coming to Utah and filling up my mountains and desert stay out find somewhere else live.