I agree with Smrobs. Any tool can be used incorrectly or can be the best thing ever. My horse seeks the bit out when I'm holding it. I wouldn't go so far as to say I wouldn't buy a horse never having worn a bit, because I would love the fact that they didn't have (possible) baggage from someone with loud hands or rough hands tugging on their mouth.
This isn't such a big deal, halter/bridle...
It's the way you use them that is correct or incorrect as well as personal preference. You could probably use a neck string incorrectly and cause your horse problems.
Also, just because you have a bit in your horses mouth or a halter on their head doesn't mean you aren't riding bridleless. You don't actually have to pick up the reins, or neck string. They are there for corrections not control. You only get true bridleless riding from not using the tools sitting on your horses head. It's their job to uphold their responsibility, if they don't then they are corrected.
We all agree that we want the best for our horses, none of us is going to go out there and purposely harm them, we are all doing the best that we can. Even those people out there using the tools wrong just haven't learned the correct way a lot of times, or a way that is better communication for the horse. I'm sure everyone of us is out there screwing something up, but our heart is in the right place. Tom Dorrance, Ray Hunt, all those guys were still making mistakes they didn't know yet. No one is perfect, as long as we try to be the best we can be for our horses and are constantly trying to be better, we are doing the right thing.