I understand that this is how it is supposed to work in theory. But realistically most startups don't (and dare I say shouldn't) have the luxury of a dedicated

I understand that this is how it is supposed to work in theory. But realistically most startups don't (and dare I say shouldn't) have the luxury of a dedicated Scrum Master. Another thing I don't like is that it relies on humans to do a good job. How do you hire a good Scrum Master if you've never been one yourself? Hires like that are usually hit or miss. What if you need to hire ten of those?