Agreed. I used it to do some API testing that required callbacks to my dev machine and was dumbfounded it was so easy. I kept looking for what I had to setup but the instructions just said "run this command".
So I gave it a try and bam... it worked. So amazingly easy.
I'd vote for anything that doesn't break that experience. I could see reasonable rate limiting, but that may not kick in unless a fishing link was getting a lot of traffic.
I get that abuse is a problem, but count my vote of extreme appreciation for how quickly I got exactly what I needed.