How much money these exness and other forex firms in Dubai paying to trading influencers

I have been trading since 2017 - I know most traders who’s selling courses, from 2017 to latest in the market, I have no question about them selling since everyone learn hard way and sharing those insights for a source of income . But what surprised me was all these traders stopped selling courses and actually started referring prop firms and selling funded accounts. Is that more profitable than actually selling trading courses?