Wrong to make generalizations.
My uncle suffered a stroke many years ago and his sons PLUS each of their wives devoted themselves to taking care of him so that he could live out the rest of days with dignity and in the comfort of his own home.
The sons jointly cared for their father and the wives were phenomenal - someone always stayed with him since he didn’t like to go out very much. If there was a family event - one person from the couples would stay with him.
My uncle was fortunate in how dedicated his family, including the bahus were.