People make comments that are far too flippant. I would gladly turn on a mode where I have to pay 100 sats per note and everyone else does to (perhaps it could be a toggle and continuously variable on a per note basis). In the traditional, tribal world, there is a true opportunity cost to one's words since you have a limited time with a limited number of people to share your thoughts. The internet removed that scarcity, so people shout aimlessly and arrogantly.

When one's thoughts are costly and hodl'd it is easier to hear those who are sincere. Spam is not a binary problem, it is an analog problem. "Well said" or "you're amazing" as a note response to a "celebrity" is actually a form of spam.

Accosting Michael Saylor IRL to say "thank you so much for what you do for bitcoin" is spam. You will not learn or humble yourself, but costliness will shut you up so those who have something to communicate about can do so efficiently.