Writing bios is the weirdest thing. I just had to write one for a local authority in the UK who want to know why I might be qualified to teach secondary school level computer science to somebody, and to my ears it both sounds weirdly boastful while at the same time I know that it probably doesn't include what some of the officials are looking for/expecting.
"Why does it matter that he's taught hundreds of people over 15+ years? He didn't even finish his degree, and he has no initials after his name at all!"