After demo day, we were able to get in the room with dozens of top-tier investors, got multiple term sheets, and were able to pick the seed investors that were right for our business. This is a luxury none of my non-YC founder friends have had (being outside of Silicon Valley it was just such a stark, stark contrast in our fundraising experience to my friends'). Fundraising has always been a struggle and giant distraction for them.
The doors YC opened for us let us focus on building and have had an outsized impact on our trajectory. Re the 7%: I'd much rather have 93% of a giant pie over 100% of a small one.
Edit: I should caveat that YC and VC in general are built around finding & amplifying outliers. If you don't think you are an outlier founder and aren't trying to build an outlier company, our experience probably isn't relevant.