This is delicat thing… They are satisfied that they did pushed the GA nerf on her. And again, with other changes I don’t think she is picked in T500 as much as she used to. T500 agregator shows that she is 5th pick in T500 now. So even if they get a bit frustrated, it is not to the point that they explode with rage and rants now. It have to accumulate to that. And when they get a game or two without her on enemy team, then it slowly fades away. So I do not think those will be any time soon. Unless some one will loose their nerves and then they would start this again.
And fact they consider her S tier is not shown in the pick rates now. She is 5th pick in T500, with 101 picks so far. Compared to Kiri that is 1st with 432 and ana that is second with 344 is really saying a lot here. I am not saying that Mercy is not strong with her current form, but she is not as picked any more there as others. If anything we should have ‘nerf suzu’ posts in few weeks since streamers will get fed up with Kiri randomly saving her teammates and being general pain in the place where back looses its noble name.
I think I was not clear enough then.
AFTER the change happened only one that thinks she is too strong and needs to be reverted is Samito. I didn’t saw any one else saying that (but again it is not like I spend 8hrs a day scouring internet for those opinions 
).
A lot of GM Mercy mains did long essays about how to go about balancing her few months back, that is true. But Blizzard did ignore all of that, which is dumb since they were the ones that asked for them…
It is combination of the two… Smart mercy now plays safe, and when gets dove she has GA off CD AND the passive to heal her a bit through damage applied.
That is misinformation, please stop spreading it…
That is 22,5 hp/s… Assuming you are in a Valkyrie form… Most ults have more DPS than that or are just straight up insta gibs.