Question to those that were in Barcelona, does Mao has as much security as Yuzuru?
Short answer: No
Long answer:
From the 16th floor of the hotel on the day we arrived, I saw flocks of fans following someone from the rink. I used my camera to zoom in and see who it was, and it was Mao returning from practice. She was patiently signing autographs and posing for photos with fans. So she was very much more "accessible" than Yuzuru!
Some time later we went down to the lobby, and it seems Mao had only just arrived despite it being such a short distance from the rink (as we stepped out of the lift, we were face to face with Mao waiting to get in!). So she must have spent a LOT of time on "fanservice"! (I don't think she had time for that on subsequent days though).
There were typically several officials etc accompanying whenever we saw her, so she does have security - but she didn't have a scary-looking bodyguard like Yuzuru. She also didn't seem to get rushed from place to place in military-style operations, with a security-cordon of officials around her preventing anyone getting too close or getting into a lift with her. (Which is what Yuzuru had).
I don't think Yuzuru's security is particularly over-bearing - it's just that he can't stop for "fanservice" or he'll be stuck for literally hours. Mobs of excited fans could also be unsafe for him - and the fans. I believe he said in a recent interview, that he'd like to sign autographs and thank every fan, but it's just not possible, and it's unfair to do that for a few fans but not all the others.
Apart from that, I think it's probably smart to avoid contact with the public anyway, at least until after a competition is finished - don't want to pick a cold or anything! Maybe Mao should take note...!
By the way, I note that general police security at GPF was much higher this year - last year there was a police car pretty much at all times outside the rink, and some patrolling police. This year there was also a group of heavily-armed police outside... many more patrols going around the building... and one or two heavily-armed police stationed outside the official hotel as well.