Not in iOS 15.4.1 in Safari. Maybe you're using a different browser or version or are on a different site or page than I'm asking about?
If you didn't tap About, there is an address on the page that comes up first. Or tap Overview. Either way, if you hold on that address it gives you a sneak peek of the page it will open if you tap it. If you try to select copy from the pop-up, and paste it into Contacts, it will paste a bunch of code