There’s a lot of advice being given in startup world. Most advisors have good intentions, but that does not mean that most give good advice.
Everybody wants to be helpful, and when asked a question we all try to answer the best way we can. But many times we do not know enough about the matter in question to give a good answer. And unfortunately, many fail to disclose this potential lack of understanding when answering, sometimes leading to entrepreneurs following bad advice blindly.
One should always assess advice based on the arguments supporting it, rather than the credentials of the person giving it (but sometimes a person’s credentials is a supporting argument in itself). Talk to multiple people, and triangulate to figure out what kind of hypothesis you want to move forward with.
I find myself giving advice to entrepreneurs once in a while, and in such settings, I try to always mention this.