Now you don't need to find a good "Drupal developer" -- a good developer should be able to pick it up and figure it out without years of learning the specific incantations and magic charms of all those Drupalisms.
This is so tragically not true it's not even funny. Now instead of php + drupalisms we have php + drupalisms + symfonyisms + drupfonyisms + backbone-isms + underscore-isms + ?.
I've already seen symfony developers posting about how they're trying to wrap their head around drupal 8. Why? The entire point of adding symfony to the mix was to remove that obstacle. There was supposed to be nothing to wrap their head around.
In order to properly 'get off the island', drupal should have been completely rewritten from the ground up around symfony-- without any drupfonyisms. Since drupal NEVER supports backward compatibility, what was there to be gained by only partially converting to symfony and leaving a ton of WTF's for BOTH drupal devs and symfony devs???
imo this was a complete lack of vision. Instead of migrating to symfony intelligently and with careful forethought and planning, it just sort of happened piecemeal (oh, lets migrate the menu router to symfony.... oh wait, lets migrate the theme system to twig.... oh wait, lets migrate to symfony dependency injection... etc etc). What resulted is a frankenstein of both.
If anything, this will actually exacerbate the issue of false drupal devs. Instead of random php developers calling themselves drupal devs (and charging accordingly) who end up posting to stackexchange about how to db_connect to a different db, we'll have certified symfony developers (also charging accordingly) posting to stackexchange about how to specify "database_driver: pdo_mysql". Surprise-- the joke's on you symfony dev-- it's still done the drupal7 way)!
And lets not even go into the fact that, after waiting for over 2+ years, someone unwrapping their brand spanking new drupal 8 site will have to deal with an incessantly and unrelenting blinking page on every single page load as the toolbars spasmodically re-render (tried it with 3 browsers under 2 operating systems locally installed and with simplytest.me).
Knowing both drupal and symfony this is actually great for me-- it will keep me busy well into retirement, lol. But the amount of spinning going on right now to explain how gr8 this is all is, is absurd.