They are responding to incentives. You can choose to interpret that as "gaming" if you like, but the lack of zaps on nostr doesn't mean posts their are bad. That's also people responding to incentives.

Good systems yield good results. SN has better results (i.e. quality discussions), therefor it is a better system.

i tend to zap people that comment on my questions in general, just as a matter of habit, then if i see something extra funny etc, i zap a bit more. i think we all benefit in the end tho