Radioactive (#32)
I don't know if they are against trading and selling, but I guess they just want to make it "fair" because this was a glitch, not that people are early users of the site. So pets obtained by a glitch (mistake) are a bit different than pets obtained by people being early members but the site is working as intended.
Honestly when I heard I missed out the glitch I got really sad because I wanted one of the glitched pets to hopefully trade for one of the ks/alpha kitties. (I know that sounds bad).