So does that mean swollen calyxes are always a telltale of the specific phenos ripeness?
Swollen calyxes are always a general sign of maturity yes.
But you have to take everything into account.
There are 3-4 telltale signs which I mentioned above;
Swelling of calyxes.
Receding pistils.
Trichomes degrading (amber trichomes signal degradation process and loss of potency).
And the overall look of the plant.
Trichomes are obviously extremely important since they determine the potency of your product.
Calyxes are also highly important since they determine the weight and size of the product.
Receding pistils are just a sign, they don't "produce" anything.
Same with the overall look.