More guns have been cleaned to death then shot to death.
I don't overdo it. You may be. I sure wouldn't have cleaned a glock afer 10 rounds.
Do you detail strip it when you clean, or just field strip? If you're detail striping your glock that often it's probly not good.
I usually clean my semi autos by fieldstriping, giving a scrub with simple green and a toothbrush. Bore brush for the barrel. Then I rinse it, dry it and oil where oil goes.
Once a year or so I'll detail strip and really clean the hell out of it.
My .22's pistol and rifle, I run a boresnake thru dry and give a light clean and oil. Every 4 or 5 range trips Ill take them down fully and give it all a good once over.
As long as you're not detail stripping your Glock every time, you're not hurting anything, but it's also not necessary. But if it makes you feel better, no harm in it.