I thought that exact thing. I seem to remember that at least in the OT, George wanted the lightsabers to be treated as if they had some heft to them and were more akin to claymores or other large medieval European blades. The PT seemed to poop on that, with the greater emphasis on faster, more flowery, Kendo-influenced dueling.
With this latest episode, I wondered if that original concept was what they had in mind. Only thing is, Gideon and others prior didn't seem to have much difficulty handling it, so I'm not sure how they reconcile that. Personally, I liked seeing Mando struggling with it a bit rather than magically being a master of it.