All browsers should have a setting that just tells all sites that notifications are enabled but never actually shows them until the user opts in so sites can't present those stupid prompts.
And why attempt to start sending notifications if it is the first time I have visited a site? I don't know the site, I haven't had time to read any of the content. Why would I possibly want to get notifications from a site I know nothing about? Maybe if I visit it several more times in the next week or two, then ask me if I want notifications if you feel you must. Anything else is just annoying and sort of mindless.
Sites likely do this to prey on "yes-click syndrome" where people just blindly mow through prompts to get to whatever it was they came for more quickly.
