I once had a friend who would frequently question the purpose of critics. I think most of us just accept that it's a viable role without giving it any thought, but try defending the need for professional reviews. It's harder than you'd expect.
That friend thought critics were useless, and I understand and respect the perspective. Ultimately, though, I support the people who write about games. Obviously. A good critic can be as insightful as the work's creator, and I've certainly read reviews that were more entertaining than the game, itself.
In my ongoing job hunt, I've applied for positions making games, writing about games, and doing completely unrelated to the field, and I've found reasons to get excited about all three. There are developer jobs that are way better than video game site editor jobs, and vice versa. I don't see either as the clear winner.