I agree that every Jew should identify with Torah Judaism regardless of their level of adherence to halacha; mitzvos are not all or nothing, but emunah is… Having twisted beliefs is a worse violation than many other sins, so in reality, a believing jew who struggles with his yatzer hora, or even if he’s given up on certain mitzvos, is still in a better place than a “farshita’d” person who keeps whatever they believe in and disregards the parts that they don’t accept ideologically.
It’s like two people who come to court for breaking the law. One is contrite and admits his guilt, asking for mercy and help not to reoffend. Another is a revolutionary who incites anarchy and will not admit that they did anything wrong and that the legal system just accommodate them
Who do you think will be punished more severely?