@ChocolateDeficitDisorder
ChocolateDeficitDisorder as you DH has had years of experience and in a senior role he would I expect understand the dynamics between patient and HCP and how some are vulnerable and the vulnerability that many women feel around males
Of course, I trained as a nurse along with him - we met at Uni.
This doesn't change my question. How does it work if he is the most appropriate nurse for the task in the area? What if we choose to move to a small Scottish island and he's the only nurse on call? (this actually can be the case).
We have to get past this, as do the general public. We would be outraged at racism and religious bias against care staff but we find this acceptable? There have been male doctors forever and male nurses are growing in number. They're professionals - treat them as such.
What about healthcare assistants, who are the ones likely to be performing intimate care? They can often have quite rudimentary training, are not on a professional register, may be very low-paid and low skilled (especially in settings like care homes where there may not be any professional oversight most of the time)?
Your DH might end up washing bottoms if he were the only healthcare provider on a Scottish island, but as Team Leader he presumably doesn’t provide intimate showering care in a hospital setting in his current role.
Plus, even in the case of “professionals” - I’ve personally known of three cases where a male GP or hospital doctor has been investigated over varying degrees of sexual misconduct/unprofessional behaviour, and in two of those cases the complaints upheld! In one the dr was struck off and in the other he apologised profusely and was sent for a lot of training and is still working.
So not all male hcps, but definitely some male hcps. How am I, or the OP’s elderly aunt, meant to tell the difference - by telepathy?
I’m in my forties and angry and articulate, and reasonably fit (still can give a good kick to the nuts even if I am a bit chubby 
), so I might not feel as threatened as OP’s aunt might be. But if I was 80 and ill and in pain and no very mobile and naked? I can imagine I’d feel pretty potentially unsafe and uncomfortable in that situation tbh. And the fact that the male hcp is probably not going to do anything bad doesn’t mean that it’s guaranteed that he couldn’t.