I agree and relate to a good amount of this response but I think it's a little over the top. For one thing I don't think every startup out there needs to have it's goal being "change the world." If you have a world-changing idea, that's awesome. But a startup can also be a great product that makes a certain audience very happy or helps fill a particular need. Not every startup needs to accept huge amounts of funding or go deeply into debt. Going that route often puts you on an all-or-nothing path where you have to hit a grand slam or else crash and burn. That in turn creates massive pressure and stress. It's not the only way to start a company.
It's also interesting how one person's definition of changing the world is working on a cure for cancer, another's is an app to share photos with family and friends and still another's may be better HR software.
I sometimes wonder whether the people who talk about changing the world believe it or it's just become something people say.