HSTS is required for .dev
mkcert is one.
Not all web development is three guys on Linux laptops at WeWork.
I'm trying to imagine a webdev workflow where you couldn't get a machine-local CA working.
https://docs.microsoft.com/en-us/windows/desktop/seccrypto/s...
Something tells me it's not actually that much trouble though, and people just like whining about minor inconveniences because it's the internet and they can.