know what i'm not passionate about? working for free.
i don't know of any lawyers who meet with clients for an extra couple hours a day without charging because they're passionate about the law, or surgeons who don't bill for their work because they're just so gosh darn passionate about surgery. i also don't know of any construction workers who construct for free, because they're just so passionate about building great things used by thousands or millions of people.
not commenting on the quality of people discussed in the article, the real "get out of my industry" should be to the people who slave away in front of the computer, working for someone else, and expect no overtime or pay for their above-and-beyond efforts. they devalue the entire profession.
and tangentially, in my experience, it's the overzealous and over-passionate people who ruin the workplace by forcing bizarre methodologies and process on everyone (agile development, anyone?), attempting to coerce everyone into working overtime, and switching technology for the sake of switching. and in the end all i've seen out of those people is completely average results.