flakes are anything but experimental at this point, they've been out for many years and I pretty much use them for everything.
you don't have to type those flags if you add them to the configuration file
If I’m learning something as big as nix with all the facets it has, I don’t also have time to learn it’s entire community history. It’s not a good thing that I need to do that in order to make a decision about how much to trust experimental features of a tool when I’ve not even been using it more than a few hours from the moment of downloading the iso and installing it. It’s a put off to someone new coming to use nix for the first time.