This article casts more light:
It became clear that in order to save his legs he would face multiple operations and skin grafts with no guarantee of success.
He also feared having skin grafts on the soles of his feet could be detrimental to him returning to work where he spends much of his time standing.
"I had a chat with the plastic surgeons and I met with the prosthetic nurse and decided actually losing more would give me a better outcome," he said.
"I opted not to have hundreds and hundreds of operations but just to have one to sort it out."
https://www.bbc.co.uk/news/uk-wales-64861273