How do I feel about it? Horrified pretty much covers it.
I’m another UK resident, I’ve had surgery I wouldn’t possibly have been able to afford on the NHS, and it helped me get back from being unemployed and practically bedridden to working full time. No worrying about paying for the scans, surgery, overnight stay, they even gave me a new toothbrush free, just worry about getting better.
That said, there’s a kid locally whose parents are trying to fundraise for surgery for their kid who currently can’t walk. The surgery would give him a good chance of being able to, but is novel and rare enough that globally only one surgical team, in the US, is currently doing it, the NHS can’t treat him in house, and can’t justify spending the huge sum to send him to the US for what is not lifesaving treatment, so his parents are trying to fund it. That’s what medical fundraising is here, it does exist, but only for experimental treatment or extremely rare conditions, and generally non-life threatening ones at that.