Never mind banning parts of the press, if press briefings increasingly become private 'gaggles', doesn't that also mean that the public can't make up their own minds?
Is it an admission that the press briefings are a disaster?
In the old days restricting access would have meant that the story couldn't be reported the next day or on the 6 o'clock news.
Now people expect live tweeting and live streaming and instant access on Facebook and YouTube. Spicer may be able to hide in the WH, but he can't stop people uploading videos of town hall meetings or sharing information on Twitter.
(OK, there are countries where the state controls social media, but the US is still a long way from that.)