Thats a pretty high horse you're on, sure you can breath up there?The main isue seems to be that certain people, notably the particularly loud section of the gaming population, feel insulted that a new codex requires them, in an atrocious crime against gamers everywhere, to actually change the force composition they've carefully min-maxed via the Internet. All but a few of the "DA are useless now!!!!!!" posts boil down to this, inevitably wrapped in a slightly whiney complaint about Combat Squads. There's been next to no proper discussion over what's better and what's worse that hasn't been tainted by this egotism, so there hasn't been an informed consensus on precisely what happened to the power level of Dark Angels.
Its funny, but most of the posts I've seen decrying the new DA are based on the increased cost vs. Vanilla marines, the next-to-useless mandatory upgrades and wargear (is a 5-man lascannon squad likely to need frag and krak and a bolt pistol?) and the restrictions in choice that have been made.
From what I've heard it pretty much pushes you in the direction of going Ravenwing/Deathwing to the exclusion of a lot of the rest if you want to make it competitive. If you like the old style of DA, you're at a disadvantage compared to normal marines purely on paying points for stuff you don't want or not getting anywhere near the advantages that codex marines can take.
I'm sure some competitive builds are in there and there are hidden depths, but the major complaints seem to be that instead of making them marines plus more options and styles, they made them Raven/Deathwing minus decent marines.
I see what they tries to do, in making the DA have a different style, but there's no need to get rid of the option to use them as normal marines. Hell, the lack of access to traits would have been enough to make them worse in options but still feasible as good line troops.