I honestly disagree with this. Aternos made it SO EASY to share access and turn on servers, and it's the closest thing we'll ever get to free, 24/7 online server hosting. so many things about what you said really don't make any sense.
1. Giving people access is REALLY EASY, all you need to do put their username and click the checkbox (because it already selects the "Turn Server On" option automatically)
2. You don't have to log-in every time because you can just do "keep me logged in", and at the very most you probably only need to do this for two different devices (your computer and your phone)
3. You don't need an email address.
4. If it comes to the point where it literally takes more than 30 minutes to put everyone's aternos in, I wonder how your server will even keep up with that many people......
5. No offense, but if your friend is having trouble making an Aternos account, I'm either assuming your friends are under 13 yrs old, or if not, you should consider getting new friends because Aternos is SO easy to make an account with. No email, no pop-up ads (that force you to watch), NO BS.