I think they're very good.
We haven't a clue what the nature of the first procedure was, nor the type of cancer that was subsequently found, we didn't know her forwards treatment path (only learning of the end of chemo when it was completed).
They didn't cave in to the mob who couldn't understand that "off until Easter" meant there wouldn't be frequent updates, stuck to an entirely suitable line, and did precisely nothing about the cesspit of truly vile posts on SM. And we now see that for what it was - just plain nasty, and ring-led by some individuals who were not neutral players. The fuss about the photoshopping was pretty ridiculous too - fairly minor alterations from pix taken together (if you believe the actual analysis, rather than the SM claims), then one message when the DC had just broken up (timed to give them privacy, I assume) then one now, setting out that she's not out of the woods and will be seen only occasionally.
Their role isn't to appease the mob, give in to the "if they just released a statement/picture/video it'll all go away" nonsense. Their role is to give the information that she wants released and only that information, at suitable key moments only (now it's the start of term, so it's setting out the stall for what to expect in the next few months, and giving an update just as the DC go back to school and meet up and chat to their friends). It does seem arranged to protect the DC, and that's a good priority to have