It is. But again, with longer fingers you need more strength to produce the same force at the fingertip (because you're applying muscle force to the short end of the lever). Combined with the extra weight from the rest of a longer body, it makes pulling on small holds a lot harder for tall folk.

But then we can often simply reach past those small holds to the big jug beyond, so it tends to work itself out.

I can confirm this - as 188cm tall guy, even if I can reach further, the strain i get on my fingers from my relatively heavy body is taking its toll on the fingers. I can't climb few days in a row, would end up with tendinitis.

It doesn't help that I have a 'flexible type' of the body (can bend like crazy, but tendons/ligament injuries across whole body are much more common). And I started with climbing when I was 30, unlike many in their teens who seem to climb much harder without big effort.

If I would be a competitive person, I would be very frustrated with my little climbing progress. But instead I enjoy the constant challenge, the uneasiness of hard routes, the mental push through in cruxes. As they say, life begins where comfort zone ends. Overall, best sport for me for the warm days (rock experience is vastly superior to gym one), and ski touring/alpinism for the cold ones.