I find it a little disingenuous that the author keeps dropping the TLD and describing the emails as cool@<poo>, when the TLD is still part of the email address. Interesting experiment, anyway. I'm surprised that it worked well enough to get a functioning email service working with it. A lot of systems must assume that an email address or domain name wouldn't include emojis.
Same, switching between <emoji>.cctld. and bare <emoji>. made me question the author's understanding about DNS as a whole, those two are very much different things! Then again, the average tiktok viewer wouldn't, I assume, care too much about needing to tack on .kz to an email as long as there is an emoji in the address.
But yes, it's an amusing (ab)use of punycode, but still fun in spirit.
