@rookiemere it's insane and you must feel like the only one who can see the insanity.
Do you think your DH needs you to be the 'bad guy' and say 'enough's enough'?
There is a lot of emotive language used around moving parents into a CH. Too many times I have seen (including on MN) it expressed as 'shoving them in a home'.
The reality is that it can be the best (or least worst) of some very crap options.
As things are, there is a real risk that one or other of your DPs is going to end up in hospital with an infection/fall/other crisis. Hospital in my experience is horrible for the elderly.
My DM ended up in hospital for 3 months after the fall which broke her hip. One thing triggered another as she lurched from one thing to the next. The person who left hospital was a fraction of the person who went in. The conversation I had with DM in A&E after her fall was the last properly sane conversation I had with her.
I know you know all this so I'm not lecturing you! Good luck.