knowing very little about this setup, and even less about medical issues for children, all I can see is that the naysayers all seem to be people already flying in similar roles. Worried they may have competition perhaps?
As for tasking a SAR S61 to do the job of a 109? Really?
Why not see how this operation runs for a while before knocking it? Maybe they will be very successful and hush the anti TCAA mob?
They've done one task, lets wait and see if they do many more over the coming months before criticising?