Are they for everyone? Sure… anyone can add speed and it will add distance.
Are they the best use of your resources (time and money)? Maybe. I find, to a certain extent, the harder I swing the less time I have to make mistakes… if I start my swing correctly, my body has less time to get out of plane. Basically, a harder swing that’s still under control is a better swing for me.
On the other hand, I’m already at 112+ chs… I don’t really need to get rid of a regulator… it’s gone, I killed it. The kinematic sequence and over speed training help me to a certain extent, but my focus is on other things (mainly building fast twitch muscles in the gym).
With enough time, it would be great to do it all… with limited time, it might be better to improve contact and angle of attack… if you can do that and work on club head speed at the same time, it would be ideal.
Ultimately, I think for amateur golfers, we need to focus on what we have the time and interest to work on… if you will put in the time to use speed sticks, get them… if you’ll put the time in to improve contact, do that. Or just build a good gym routine around building speed and do that!