We are using jQuery/EmberJS/Bootstrap/Grunt. Everyone of the FEs agreed that experience in any JS MVC was acceptable. [2]
So while I agree that it's not JS, JS, JS but it's not quite as bad as what you're saying.
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[1]: We were having a problem getting front-end people so they had managers put 15 front-end engineers on the task full time for a month. Our mandate is 30 engineers in 30 days.
[2]: sdumas [at] yahoo-inc [dot] com if your looking!