the reason is simple - everyone looks for new income sources. so because of this all investors (especially in crypto) looks for smth interesting. because of this ico/ieo.defi hype a lot
actually it's also a drive and opportunity to get extra income. as for me, i got profit and lost money during ico, but now i got enough experience to invest successfully in new defi projects
truly to say I'm also interested in new defi projects, in my focus - dex projects based on eth