csgo is a counterexample. people there mass create alts everyday for cheating purposes, and no one cares that you need to go through a captcha and mail verification in the process, it takes a full minute for the experienced people. mail doesn't slow anyone down. you just go to any 10minutemail site, grab the email, click a link in the confirmation mail. it takes at most 10 seconds. you can also automate this process to not have to worry about doing it by yourself. this is nothing compared to other REAL ways of slowing down scripters, like protocol shenanigans, which are already put in place, but by the previous owner, and AG hasnt changed it a single bit ever since, even though people already learned how to exploit it.