My G21 blew up in my hand after using lead reloads. Glocks were new at that time so the message of no lead was not as well spoken as it is now.
I have loaded 40, 45, 9, and 357 sig in my various Glocks with no problems for almost 10 years now. No issues with the brass or function after I ditched the lead.
I can't see why reloads are any more of an issue in a Glock over any other pistol even with the less supported chamber.