Retaining great people is something you earn. You don't earn it by daring you hope others attempt to poach your employees to test their devotion. You're a startup, not a religion.
Other firms attempting to recruit your people is a sign you've hired good people. Also, a sense that employees have a choice of where to work, and you'll do the best you can to make your company a great place to work is also good.
I think tone matters in blogs like these, and I think the HN community appreciates the positive portrayal of things over bravado. Maybe your original post flowed naturally to you. If so that is ok, but I think you would have had more success with the post had it been more observational instead of confrontational. To each his own.
Best of luck with fab, it is a great company/site.
And, a startup is more than a job, it's a lifestyle.