Exactly my reaction as well. The only 'benefit' she lists that I can truly see is 'greater visibility into the code everyone else is working on' but frankly that seems like it could be a burden as well.

Sometimes you don't need to know. If your team organizes it's projects and assignments well, you very well may be able to work on your small piece and integrate it without really needing to know every little thing every other person is working on.

With frequent commits branches just seem like an easier way to resolve conflicts as well as speed up the ability for others to test and merge their changes while you can resolve issues with a build.