When I read blogs like Version Control and “the 80%” I see though that they, being the Subversion community, are going have to go through an education process to get their own community on board. Points like:
It just goes to show that FUD is not only the domain of the proprietary software world. Open Source is just as capable of doing it. If you stood over my shoulder and saw how I work with Bitkeeper daily it would become obvious fast that there is no truth to the above points. Giving the author the benefit of a doubt I assume they have never actually used a distributed tool or spent any time with people who do on a daily basis.
Some of the wording in the blog is just over the top. Statements like "completely blows over the head of the 80%" makes me think the author believes the 80% are a pack of vocational losers. Why even invoke the word vocational? In the US the word often is used as a derogatory for marginally skilled labor (which is udder crap).
Give me a break, just because someone has a life outside of work it does not mean that they will be a lousy engineer. The author might have well said "if you are not very smart or motivated, you should be using subversion". Which is an insult to those who use Subversion.
There are plenty of projects and products being run by good engineers that use centrally controlled revision systems. In LAMP we have MySQL and Linux using distributed systems today. My understanding is that Python is moving that way as well (it should, considering several of the distributed systems are written in it). That still leaves a good half of the LAMP stack using subversion or similar tools.
The authors says in an update to the blog "imploring DVCS evangelists to be aware of these issues, rather than running around thoughtlessly trashing centralized systems", but his article is exactly that, except he picked on distributed revision control systems.
Evolution brings out the worst in communities. You always end up with elements that feel the need to scream about change. The faster the change, the louder the screaming.
Keep in mind though that the screaming is the bellwether of change.