In the world of value for value why should anyone be able to get your attention (via a notification) for just pushing a button.
My attention requires effort (comments) or support (zaps or reposts). Otherwise you're just a view count which in my opinion showing is a dark pattern.
Tiktok shows the number of likes but doesn't let get you access who liked it. Instead they lean on the number of views as the most important metric.
But we have zaps. So we don't need either.