I don't know that "majority" would fit there either.
There are some people who want that joint home etc-I'm one of them.
The answer for me is-when my husband was the toxic person to our group-he moved out. Yes-it's his name on the mortgage and yet it still got paid. But until he could stop being toxic-he had an apartment of his own.
As for dating someone else who had a toxic partner-there isn't a person on the planet that is worth that effort to me. I wouldn't date them. They need to get their situation in order and make the situation one where dating them is "user-friendly".
If I were the toxic person-I would expect the same.
"Love As Thou Wilt"