The author says that he switched to Chrome and never looked back because when it came out, it booted up in under a second.

> Firefox developers famously attempted to fix the five second startup time in 2010 via bug #627591[6]. They fixed many issues but not enough to warrant a second try.

It would be a great point if Chrome still started up in under one second. In one data point, there isn't much difference. Plus I typically (re)launch the browser less than once per day. The time difference on start up isn't the deciding issue for me.