No, your this is completely false. It took me 8 months to get bis leggo, and during that time i did 800 bosses (all difficulties including lfr), lots of M+ and emissaries each day.
So having year to farm leggos is not really exaggeration.
And you are absolutely completely wrong about netherlight, it was way more rng than azerite. Azerite has exactly zero rng since you drop specific pieces from raid and you can buy specific pieces from vendor.