should bfs rod lengths be shorter or longer than normal baitcaster rods?

hey all! just bought the gravity avid reel and it's coming in this weekend.

I already have some idea of what rods I like but I wanted to ask, should BFS light or ultralight rods be shorter or longer than traditional baitcasting rods? I have a 6ft10in MH fast rod I'm super comfortable and used to casting with on a normal baitcasting setup, but when I look at rods for bfs I see them start at 4ft 10in - 5ft 6in, and 6ft or 7ft is the length limit for some of the ones I like.

so based on that, is it normal to use shorter rods compared to normal casting rod setups? as in, is it easier to cast just as far with say a 5"6' or 6ft UL rod due to the whippiness of it compared to a 6"10' MH rod if I plan to use 2gr-8gr lures/jigs? I usually fish freshwater canals and lakes so I don't need a crazy amount of distance.