I assume there will be a lot of Tezzies lost once the mainnet is launched.
No doubt about it. I'm amazed at how many people contributed and didn't write down the info or used fake email. Especially when it's so easy to have a discardable email if you really want to and still have access to it.
While I am not unsympathetic to these people, it is a lesson learned.
If you've never lost any crypto from doing something kind of dumb, you just haven't done this long enough.