I notice the author employing a bit of jiu-jitsu I see sometimes -- basically, that you shouldn't worry about designers not understanding ClojureScript (or whatever), because that is insulting to the designers.
But how about designers have 18,000 other things to deal with and maybe they aren't interested in learning (in their estimation) the latest wacky-ass way web developers invented to generate HTML. The point isn't that they couldn't understand it if they tried, the point is that they would have to try, perhaps to the exclusion of something they would consider more useful.
I agree with this. The author should've mentioned enlive (you got a similar library that supports om) which allows html to be html, which should make designers happy.
But how about designers have 18,000 other things to deal with and maybe they aren't interested in learning (in their estimation) the latest wacky-ass way web developers invented to generate HTML. The point isn't that they couldn't understand it if they tried, the point is that they would have to try, perhaps to the exclusion of something they would consider more useful.