I've never seen anyone advocating that LN is good because they thought they'd get rich from fees.  It's abundantly clear that you would not be able to earn any notable income from routing transactions.  People do realise this from everything I've witnessed here on the forum.  I don't know where you get this perception that people somehow believe LN is going to make them wealthy.  Are you projecting your own early misconceptions onto others again?

LN fees are almost the inverse of on-chain fees.  On-chain, users bid to offer the highest fees to the miners to give their transaction preference over others.  In LN, nodes compete to offer the lowest fees possible in order to attract users to route via them rather than through other nodes.