I was pretty sure this section meant what I said but maybe you can get them from that database without being a BigCo?:
“Our new CRL URLs will be disclosed only in CCADB, so that the Apple and Mozilla root programs can consume them without exposing them to potentially large download traffic from the rest of the internet at large.”
I assumed what they meant is that the database is publicly available but that browser implementations won't be directly pulling CRLs. Instead the browser providers pull the CRLs and create a compressed version that their browser users download.
In the same way that you can technically query the DNS root servers yourself but you don't tend to do that because your computer will query a more downstream DNS server.
“Our new CRL URLs will be disclosed only in CCADB, so that the Apple and Mozilla root programs can consume them without exposing them to potentially large download traffic from the rest of the internet at large.”