I agree that it is very easy to pocket-carry a baby Glock. A smooth draw, however, may not be so easy. Just as hammer spurs can complicate the draw, so can the blocky rear of a slide, and striker-fired pistols have slides that extend comparatively farther to the rear. In both cases, the thumb can be used as a ramp to ease removal from the pocket, if there is room to do so.
Having said that, for some folks, and some pockets, baby Glocks may be fine. My general solution for pocket carry is a spurless-hammer or concealed-hammer revolver, as I can attain a thumb-locked-down firing grip and still complete the draw without any interruption at the lip of the pocket.
Let's keep in mind that drawing from a pocket can be complicated when the fight has already started, due to motion, and being bent at the waist/hips. This is why I carry, virtually every day, at 0300 on the belt; the pocket gun is not my only gun.
To be clear, I am not anti-Glock. I owned .40 Glocks in the past, and for orthopedic reasons, as I get older and weaker, have just bought a G17, and a G26 is on my short list.