After noob gains putting on anywhere near 3-5lbs a year of muscle unassisted is almost impossible. Majority of the weight will come from water/adipose tissue. Professional bodybuilders are happy with 2-5lbs stage weight per year.
If you could read through my trolling, you will see that im all for people working out and getting in shape. You will also see i support proper crossfit gyms. The bodies you have shown are not the typical crossfit junkie, majority of people inside a crossfit gym are in shape and have great endurance.