Re: Let me use whatever browser I want to use.
Or if terrorists are forcing me at gunpoint to use Chrome?
We can dream up all sorts of hypothetical situations where choice is removed. What's the point? jake's position, as I understand it, is that browser-blocking encourages him not to use a particular site. For the vast majority of sites, there are alternatives.
Now, you can argue that only a trivial (from the site owner's point of view) fraction of customers will take such a stand, so they won't care; that's entirely plausible. But noting that there are conceivable situations where a user might be forced to use a different browser (or use some non-web point of contact - many governments still offer those!) is a vacuous argument.