Quite so.
The “minority group” to which I was referring are American Ashkenazi secular Jews. The Orthodox can take care of themselves nicely, as you say.
Over the last century Jews, as a group, have dropped from about 3% to 1.7% of the American population. It seems likely intermarriage and assimilation and disappearance into “white” America has been at least a contributing factor. Other factors probably include a low birth rate among secular Jews and increased immigration from other groups.
Pretty much the same thing has happened to all Jews in similar circumstances even in pre-Nazi Germany where Jews were highly assimilated. I expect that the Reform movement has an awful lot to answer for in that regard. You know, I wouldn’t mind them if the change in religious orientation were genuine. But it isn’t. People for the very greatest part opt for Reform simply to make life easier.