They're using Nostr Login - little button on the right of the page.

Well, I've tried asking people about nostr:nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcqyqfllpq59fjjvfz3ynqcp76ngt82zvx4trlv04ygqxw3mtn64jsc5s5jswk livestreams but it seems that NOSTR isn't much more than an empty void one may shout into if one wishes.
I tried using nostr:nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcqyqfllpq59fjjvfz3ynqcp76ngt82zvx4trlv04ygqxw3mtn64jsc5s5jswk just now but I don't know how to even "log in" unless I happen to have one of the login things they work with which I don't.
They're using Nostr Login - little button on the right of the page.

Thanks. I tried clicking that button but it took me to the same screen that I didn't know how to use before.
I don't see the option that I use to sign in to NOSTR things there which means I don't know how to proceed.
I don't want to use more than one "extension" or whatever they're called...the thing that I use to sign in to NOSTR stuff without actually using my nsec...whatever we call those things...
The more places I enter my nsec, the more I am exposing myself to risk of having my nsec stolen or leaked or whatever.

Which extension/service are you currently using?
I would recommend something like alby as an extension as that keeps your keys locally. Easiest to sign in with on desktop, extensions are the most widely supported (and secure).