It depends…what would walking lunges serve your training that others exercises cannot?
I’ve found unilateral work to be helpful for me with my long legs, especially in regards to stabilizing the hips. There seems to be a high transfer to my deadlift leg drive for some reason.
However, walking lunges force me into all sorts of strange contortions and make the pattern highly unrepeatable and ineffective.
For overall leg strength, squat variations serve more than enough. However certain lunges seem to be effective for other means.
Renegade lunges - joint mobility, stability
Rear Foot elevated split squat - “symmetry balancing”
I like the split squat, or other stationary lunges, because they’re more stable and while balancing asymmetries is important yet also impossible, they do give you a good gage on how your right/left sides stack against one another.
Lunges and single leg work can also be implemented to add more work for the legs while giving the torso and spine a break yet still have a nice core component of keeping you balanced. They’re also better for repetition work than heavy barbell compound movements.
Walking lunges, however, I’ve never liked, especially in a crowded gym. They’re quite distracting and look goofy navigating around gym goers, machines, etc. I prefer doing them without weights, if at all, if I’m training outside.