You seem to have an affinity for "bespoke" -- a new "word-of-the-day" for you?At this point, I've decided you don't know what a phenotype is. And you're so wrapped up in your bespoke definition that you're unwilling to even try to learn. You are now arguing from belief.


Etymology
In sense “custom-made”, 1755, from earlier bespoken (c. 1600), form of bespeak, in sense “arrange beforehand” (1580s), a prefixed variant of speak; compare order, made-to-order.
bespoke - Wiktionary, the free dictionary
But still rather a stretch to argue that my "interpretation" is "tailor-made". You might actually try reading this article on the topic:
In genetics, the phenotype (from Ancient Greek φαίνω (phaínō) 'to appear, show' and τύπος (túpos) 'mark, type') is the set of observable characteristics or traits of an organism. The term covers the organism's morphology (physical form and structure), its developmental processes, its biochemical and physiological properties, its behavior, and the products of behavior. .... Either way, the term phenotype includes inherent traits or characteristics that are observable or traits that can be made visible by some technical procedure. .... Behaviors and their consequences are also phenotypes, since behaviors are observable characteristics. Behavioral phenotypes include cognitive, personality, and behavioral patterns. ....

Phenotype - Wikipedia
The phenotype of a juvenile -- or of an embryo -- is clearly not the same phenotype of an adult. Which is why one has to qualify and describe which phenotype is of relevance or is definitive -- e.g., the phenotype that currently produces gametes, not the one that might eventually produce them -- embryos or the prepubescent -- or might have produced them in the past. HTH ...

