And yet here we can see a lot of 1 stars due to crashes.
A lot of youtuber's are talking low fps but this had to do with a lot number high quality textures on screen,
From i have seen from the reviews , there are no more crashes then from from fallout 3, fallout new vegas or even oblivion when it came out.
So this game cannot be this bad .

That is because mostly that YouTubers who make those reviews are in general more grounded overall. The channels with reputation have lots to lose for making a not so accurate video. The reviewers have not only a lot of experience, but they also usually can afford their job - being a YouTuber - by having invested in a proper gaming rig they understand and usually have built themselves.

Also, a lot of them get free review codes from the developers and have early access.

Those all attributes put together gives a whole different picture if you compare them with the majority of (Steam) forums users. e.g.

You have a lot of people who -not that is understandable- not even know about required and recommended system requirements. It is hard to believe, but from an audience used to console gaming a lot seem to expect that any game can run on any PC at any time. They are not accustomed to Windows issues, nor do they have a routine in cleaning up their systems and keeping them up to date. Imagine if a game starts with being able to have five star rating, they would already substract a star just because of that.

Then you have the matter of regular updates and patches. I keep telling people how the release version was so much more stable for me and worked nearly flawless for my very first playthrough. A lot of people are not understanding when it comes to patch issues and other bugs with such a complex game. I am certain a lot of YouTubers came across of those bugs too, but then they are more grounded and accept it as an inevitable ink of salt. Grounded people would not substract a star for a game being flawless. But they would give an extra star if it would be flawless.

Last but not least you have a certain "mood flow" in forums. A lot of "kids" these days do not even know how forums works and post on them like they would do on Telegram or other kind of chat. Often they just come to rant, creating a toxic atmosphere. That toxcity carries over to the review rating as well. As much as the weird culture of people "punishing" a publisher by underrating a product - no matter how much joy and fun they actually had. It is just unfair if you ask me, because they do not only harm a publisher, but all the others who had contributed their work to the game too. Especially the developers who are almost always innocent in those kind of "punishing acts".

It is not just a matter whether a game crashes often or not. There are a lot of factors. Pathfinder: Wrath of the Righteous is suffering a lot of them, similar like with Cyberpunk 2077. The bigger and more complex a game is, the more likely there are problems. After all people keep forgetting this too: regardless how much bashing Cyberpunk 2077 got for its issues - for those who could run it properly it was a great game from the very start too.