Nobody knows Nevada or Wyoming law. I don't even think Wyoming attorneys know Wyoming law.
DE's court of chancery is also very sophisticated with respect to corporate legal issues. That makes it the venue of choice for investors, which means it has become the venue of choice for those seeking investment.
But in terms of states and their processes for filings, DE is a total pain in the butt. You have to pay an expedited filing fee just so that they can process your filing in less than a week. Their system is counterintuitive and clunky. You better like elevator music if you ever want to talk to a human. Sometimes they reject filings and just don't bother to tell you. It's all opaque and antiquated.
The short answer is that companies incorporate in Delaware to mitigate risk.
The slightly longer answer is that the Delaware courts that deal with corporate legal matters are much more predictable than comparable states. There is voluminous settled case law, and so when you incorporate in Delaware, it is a safe option, a known quantity, relative to other states.
That's why VCs and other investors want the company to be incorporated in Delaware. It's not just because everybody else is doing it; it's to mitigate legal risk.
When we look at consumer products, we sometimes consider the total cost of ownership. Maybe a pair of sneakers is not the cheapest, but it lasts longer than a budget pair, so it has a lower cost of ownership over the lifetime of the product. Delaware might not be the cheapest state to incorporate in, but it has the legal equivalent of a low cost of ownership over the life of the business.
We all could have picked Road Island or New York instead. But for historical reasons it was Delaware.
My point was that it's not just because it's trendy or a matter of conformity. It is a risk-management strategy.
Everyone hates Facebook but everyone uses it. Why? That's where the people are. Same for Instagram, Reddit, etc.
Everyone hates JavaScript. Buggy and counter intuitive. Mess in all the different browsers - historically. But everyone uses it because everyone uses it so it gets the community.
Maybe Delaware is the best... or a victim of circumstance. Or being good enough and one of the early states to get that foot hold.
If you're fundraising as a Delaware C Corp you will face no questions about that, but if you've done something else you will need to explain why to your potential investors (and they will probably push you to reincorporate).