I know the NM State Police ditched the Glock in .357 Sig last year and went back to .45’s (either HK or S&W - not sure) due to reliability issues.
Plenty of reasons not to like Glocks, but I can't imagine "unreliable" being anywhere near the top of the list.
I'd speculate there's more to the story, perhaps concerns over AD/ND.
OTOH, Glocks and female or small/petite framed shooters sometimes don't mix well, they are prone to FTF malfs if not gripped firmly.