Close. An online brokerage firm is probably a better example than Google Finance, because they both give you the information and facilitate the transaction. The firm selects the numbers to they show you that they think are relevant to the decision, and the means to make the decision. If you want to look at other numbers, it is up to you so find them by digging through reports or looking at other tools.
With AngelList, you get what AngelList thinks are the most relevant pieces of information, and it's up to you to contact the entrepreneur to verify information or get more information if you want. AngelList thinks that social proof is one of the most relevant pieces of information, so that's what you get.
The obvious problem with turning off AngelList is that with ETFs and public companies, there are many portals to get information and invest, while with startups, there is currently only one.