Well, compared to a 4x5 view camera, a RB-67 is not a bad choice for a starter camera.
Just have to accept and deal with the bulk and weight.
My 4x5 might be as heavy as a RB-67, but it IS a heck of a lot bulkier than the RB-67. And I have to use my heavy tripod and head to stabilize that bulky camera. And each film holders only holds 2 sheets of film. I need 4 film holders to shoot the same as you shoot 8 shots on a single roll of 120 in the RB-67. And I need a changing bag if I want to reload the film holders, in the field. So in comparison to a 4x5 view camera, the RB-67 seem easier to use.
Granted there are other choices for a starter landscape camera.
BTW, the 4x5 is a home studio or close to car camera. It is too bulky and heavy to carry any distance. I tried carrying it ... ONCE. It needs a wheeled cart (or a porter) to move any distance.