If the mods will let it through, I will give two examples.
1. A woman I know of is extremely learned and wanted to give back to the community. She wanted to start giving a women-only Shiur for the women of her community. Because she offered that, she and her family were for many purposes ostracized from her community. So she joined a Conservative synagogue where she happily teaches Torah to the community.
2. A woman was an only child and wanted to say Kaddish for one of her parents (don’t remember which). Her Shul wouldn’t let her, so she started Davening at a Conservative place where she could say Kaddish. She liked the community and stayed with the synagogue even after a year.
I know these families and they are 100% Shomer Torah Umitzvos (aside from Davening at a Conservative synagogue, obviously). I have a very hard time finding fault with people like this. They might be a small minority, but my point is that they do exist.