Their updates may be slow relative to Nexus/Pixel, but they seem quicker than many other mfgs. Aren't many of the GS7 phones just now getting Nougat, for instance?
I have had my OP3T now for about a month....I have seen 3 updates so far. IMHO its much quicker and than people may think. If they can keep up with the updates then OP is a no brainer.