Also for most people being able comfortably deadlift even 1x of their weight in a set would be big improvement and they would probably get most of the benefits.
The problem is once people get to that - why would they stop?
I’m 40. I do 3 sets of 8 deadlifts about 5-10% over my body weight. This routine wears me out but each single rep feels easy. I can do this routine every day. You could say I’m maintaining, but I’m still reaping benefits years later. I consider it effective cross training for cycling. In between sets I do bicep curls and tricep kickbacks. My goal is to find a routine that will follow me until old age.
Especially if you're a cyclist, I think maintenance weight training like this is huge. Cycling, for all it's benefits, seems to be more likely to have a negative impact on bone density than a positive one.