For you and for me maybe it's easy. But there's a lot of people that don't have access to bitcoin. So, they'll won't be able to participate. It's a very hard limitation for nostr adoption.
Discussion
I had no easily accessible sats before I started using nostr. Within a couple of days, I figured out an easy way to get a lightning wallet, and then I got zapped so hard in not sure I could reasonably zap enough in a day to zap it all away. I think that happens with anyone who tries even just a little.