I'd bet there is something you don't know about seahorses. I've been in the hobby for about 14 yrs now and I'm still learning.
While a dwarf setup can be simple, the needs are still the same. Excellent water quality.
I'd suggest before getting into dwarfs, to first get artemia cysts and start hatching them out and then simulate enriching them. It will give you an idea of how much is involved before you get to the point you have to do it.
Many dwarf keepers end up getting out because the feeding/enriching chore becomes too much of a chore.
A great site to check out on seahorses with some more up to date info than the org is
https://fusedjaw.com/ where Tami has spent much time on assembling all this information.