To ANY individual considering learning SMR I would say, do IT!
The immediate benefits that I have experienced and seen time and again are injury prevention and increased range of motion. But the side benefits include increased anatomical knowledge and I would even argue better proprioception. Someone who does regular SMR not only brings about muscular relief by stripping adhesions, working out knots and shutting off excessive muscle signaling but they become more positionally aware as effective rolling movements are about awareness of angles and the location of different muscles. Not to say anatomical knowledge is a prerequisite, certainly people can learn which “movement” in what “position” they need to do to hit their adductors wihtout knowing that muscle group by name, but you almost can not help but become more aware and intelligent about the body when you incorporate SMR into your routine.
An added point I would make to any fitness trainer wanting to learn SMR and get certified is that the value is tremendous. I use what I have learned from SMR more regularly than any given tidbit from my six other certifications. I have used my SMR knowledge to bring great relief to members again and again at my gym. Given people’s tendency to put off things like proper cooldowns and self care I can only speculate how many people might have burned out on CrossFit from minor or even major injuries if I were not getting people on the rollers or lacrosse balls after class or catching them when they come in. I have a reputation in my gym for knowing how to take care of the membership and am sought out among the other trainers to assist in all sorts of muscular relief. I make it a point when doing an introductory class with potential new members to work in a cooldown with 1 or 2 SMR movements to let the person know that I care about them more than knowing only how to “beat” them up and get them sore. SMR shows that you value the overall welfare of everyone who comes through your door.