This is one of those things that seems true, but is it? They’ve presented no evidence whatsoever. Even the question itself carries with it an assumption. Does time seem to pass faster as we age? I bet you could find some people for whom it does not.
What are you arguing against? This is an experiential thing. Or phenomenological. Evidence? This is just something that people often report. No one cares if there are counter-examples. That doesn’t make it less true for those that experience it.
I definitely feel it. I'm sure some people do not, and they are lucky. My recent perception has been distorted by the pandemic years and resulting working-from-home. WFH created a monotony I never realized was possible. Time had sped up, in general, though some days (especially Mondays) drag on forever...
