"many of the things that make life worth living aren’t measurable at all, or if they are measurable then they aren’t comparable. How many dinners with family equal one random act of kindness?"

I think there is a dangerous mysticism in this idea of the immeasurable, incomparable, and unfalsifiable value judgement. It may be difficult to reason about the value of family dinners or acts of kindness, and more difficult still to calculate or approximate some kind of dinners-per-kindness measurement, but that's a different thing entirely from claiming there is not and cannot be such a measurement.

For example, you could adopt the axes from the rest of the article, and ask questions like "how much of my money and/or free time would I give up for a family dinner?" "how much would I give up for a random act of kindness?" "is there a minimum amount of money and/or free time I need to be able to afford family dinners or acts of kindness?" "if I only had enough to afford one of the two, which would I choose?"

Saying "my values are complex and I don't know how to reason about them" is the start of a series of interesting questions that ultimately yields a better understanding of yourself. Saying "my values are so complex that they cannot be reasoned about" is anti-intellectualism dressed up as profundity; it's nothing more than an excuse to stop trying to understand.

Worse, the entire foundation of the premise is rotten. Oh, sure, rational thinking is great for measuring laser waves or whatever, but can you reason about the beauty of a sunset, the warmth of a lover's embrace, the blissful confusion of waking from a nap on a summer afternoon?

Yes you can. And the sooner you stop thinking that significance demands ignorance, the sooner you can start understanding and improving the things that are most important to you.