If you are referring to "the best way to know is to know" is by testing your bud right off the plant then fine. I myself would never test bud fresh off the plant, I allow mine to dry and be cured for at least 2 weeks before I touch mine. But that's just me. If you pluck a bud off a flowering plant and it gets you high then you know that after drying and curing it will be twice as potent.
But, this IS IN NO WAY the proper way to judge when to chop.
Flowering time is MORE accurate when starting the count on the first sign of pistils, not the switch to 12/12 lighting. The seed shops may use the times they give for flowering specific strains from 12/12 switch, maybe that's why I have never had a strain finish on or before those times.
You use flowering times from first pistils to BE MORE ACCURATE, not to calculate exact harvest times.
But to say tricohmes are not a good accurate way to judge when to chop is a ridiculous statement. It is the best way to determine harvest time.
Your way is actually more inaccurate being the THC isn't even fully processed until dried.
I suggest you refrain from calling others retards, not only won't you last long on here with that attitude but you won't be taken seriously.