“is it at least better that they consider themselves orthodox, Daven, keep kosher etc.”
Of course!
“Do you consider them frum still?”
Anyone who is shomer Shabat and keeps a kosher home is in a very real sense part of the community even if they keep no other mitzvot. We certainly consider ganavim to be a part of the community even though certain types of business fraud are also described in the Torah as a toeivah.