Don't agree with that. As someone who has had the misfortune of having to support out-of-date browsers, anything that can be done to force browser upgrades is a plus in my book. I'd rather have a few people angry at me than deal with another IE update-style browser that just gets lost out there with nearly zero hope of updating.
For example, I applauded Mozilla for this[1] move.
1. http://www.tomsguide.com/us/firefox-mozilla-Chistian-Legnitt...
>>"We don't think self-selection will ultimately get us to the place we need to be," he said. "We will force 3.6 on 3.5 stragglers not choosing to update to Firefox 4 or 3.6 (give them the stick). We feel comfortable making the major update choice for users because a) the versions are very similar and b) we'd rather lose a small amount of miffed users than leave a large amount of users vulnerable."
Keeping an old browser version is something I wish a user could not do unless they went out of their way to install a nightly by themselves and that nightly should nag them to death after 15 days to stop using it. The internet would be a much cooler & smoother place if all webapp-devs could assume that everyone is using the most up-to-date, cutting-edge browser. I wish Google would enforce this by choosing 2 saturdays every month to simply break Youtube for anyone on an out-of-date browser.