It is a ridiculous sentiment, but my startup has had revenue from early on, and I've talked to investors who have wanted to value us on revenue multiples because of that - whereas without having any revenue they would have taken a guess at our potential. (They'd have had to, they can't apply a multiple to $0!)
It's stupid, $2000/month in revenue shouldn't mean you are valued at less than if you had $0/month, but I can understand why some founders don't want to have any at all - in order to not have the more silly investors be distracted by looking at it.
There is a little truth to what he's saying - Once you have more than $0 in revenue, you have to make that number go up every month to keep investors happy and have nice numbers to bring in new ones, which makes it harder for the startup to invest in longer term projects that could bring much more revenue but with a slower buildup.
It might seem like cheap shots if you have only seen short clips of it though.