I’m not much of an ageist, but I do have a general bias that I won’t apply in any given particular case. Heck, I adore Laphroaig’s 10 yo C.S… I prefer Lagavulin’s 12 yo to their 16 yo (but who doesn’t?). yadda yadda yadda …
Seeing that you were shown 8 malts, I would expect the SMWS to present one or two in the 15 - 20 yo range, and one in the 23 - 30 yo range. I’d be a little disappointed if more than 2 were less than 10 yo. But, to your point, at the end of the day, if they’re good, they’re good, and that’s all that really matters.