I probably didn't do a good job in listing down all the benefits. I skipped the biggest one - the YC network. It's an amazing network that's ready to adopt new products as well as invest in them.
YC also gives you a lot credibility. If you don't have a pedigree (previous exit, FAANG network), it's your buy-in in the big league.
Besides they invest 125k, which may not sound like a lot but is a good first cheque in that can get you pretty far on it's own.