Exactly. At least I hope that more and more people do realize that it’s actually more than high time to change their ways. Like I said, my hope is on the younger generation to get their priorities straight. But of course, it would be best if everyone did their share and tried to live as sustainable as possible.
You can get an invite to Idena through the Telegram Group, there’s usually lots of people offering them if you ask. Most will probably ask for your training results though, so it’s best to first go to the Web App and do one or all three of the training sessions, so you have your certificate ready.
Yes and no. There is always a specific time (so far, it’s been every three weeks, on Saturdays) so everyone globally takes the test at the same time. And then once you’re validated you can, or actually have to, pass the test every time, can only miss one or two in a row depending on your “age”.
As to your last question: It’s to make sure that the network doesn’t have duplicate users, that one ID equals one human being. This is the democratic approach which makes sure that no one gains unfair advantage by running bots and such.