I have seen many western horses that have an uneducated mouth, to the point they don’t know how to take and hold contact.
Especially bad are cutting horses and in another way, many of the lower end speed horses.
With cutting horses, it seems the trainers are spending all the time bumping the horses off the snaffle, where there is no contact at all.
When we get one of those, they really need to be retrained from the basics, no matter how good they were at loping circles warming up and cutting in an arena.
With speed horses, it is more a lack of a concept, more of a jerk and kick type riding.
Many English riders, on the other hand, tend to be “hand riders”, overly dependent on their hands for an aid and some, worse, for some balance.
It is nice to see a western horse that can take contact and understand what it is, just as it is to see an English trained horse that you can ride on the buckle without the horse becoming discombobulated and traveling all over the place.
I think the best way of training and riding is whatever works best, for what your goals are, for you and your horse and someone on the ground helping you know what they can see going on, so you can adjust to that, along with what you feel.
The world is changing, information cross-pollinating and more and more trainers today at least understand there are other concepts and ways to ride out there and experiment with them.