Very true. Machines don't teach movement. The one thing I try to include with my weight training is to do exercises that include as many muscle groups as possible. Things like planks (difficult for me.) force me to use more than just muscles from my arms and my chest. Then I also use Plant Walk outs with variation
My variation is that I include one or two push-ups and a 5 second plank hold. When I return to standing position. I stretch upwards as if I'm trying to touch the ceiling without taking my heels off the ground. When I reach, I reach as far as I can then I try to elongate my spine by reaching up with my torso. I suck my stomach in and try to "sit up straight" while standing. It's that same type of feeling but it's done while standing.
There are machines that work the same groups of muscles but not at the same time and using the same motion for the same length of time that is done during the motion.
This is the trend I've noticed. More non-martial artists are doing horse stance than martial artist. There are tons of videos like this on youtube. They outnumber the martial arts videos about the horse stance.
I do this one at home with resistance bands, but I don't squat this low. I also do my horse stance with right foot forward and left foot forward as if I dropped to grab my opponent's leg to pull his feet from under him. Or if I drop my weight and pull my opponent to the ground.
Resistance Band have become my favorite weight training tool.