This is DEFINITELY not true for the Droids. Last year's Droid's KitKat update was unusually fast - and was buggy, some pretty awful ones, that weren't patched for more than 6 months. Motorola, though, was relatively transparent about the updates (which Samsung has never been) and was holding off for many reasons - Verizon's priorities (they wanted a very minor roaming update pushed first, which affected a very small number of customers traveling to a specific area in Canada, if I remember right), Google's quick patching of KitKat to 4.4.3 and then to 4.4.4 because of Heartbleed and some other bugs, etc.
Kudos to Samsung for getting 5.0 out, kudos to Moto and Verizon for holding off until it's right.
If getting updates ASAP is important to you, though, you bought the wrong phone. Buy an iPhone or buy a Nexus phone next time.
BTW, the Turbo is more like a Nexus 6 than a Moto X, as far as hardware goes.