c903, You are correct indeed. No, one is being critized here.

Draw length is the key to proper form. If you are too long it would be near impossible to keep the arm slightly bent. Too short and your arm will be too bent.

Also, if you are overbowed you will not be able to control your positioning to obtain the correct form. Too much energy will be spent holding the bow back in an inproper position.

Being too bent, it will be harder to find a constant anchor point , which is detrimental to consistant accuracy.

Too straight and you better have an arm guard.

Everyone will have a different preferance as to what end of the spectrum that they would like to go. A little bit of effort is required , but you will know when you find the sweet spot.