Glock Grooved vs. Smooth Trigger

[8200rpm]

Why the disdain for the grooved trigger face of the 19/23 and 26/27? Seems like some shooters prefer the smooth face of the 17/22 and 34/35 trigger.

I'd like to get an explanation from folks who prefer the smooth trigger. Is it simply a tactile preference, or do the grooves somehow impede how you operate the trigger.

Thanks.