Totally agree on that! As with anything, it is use vs. abuse. A moderate amount of exercise helps in a bunch of ways so more is better, right? WRONG
Exercise addiction will consume you - you either cut sleep short or hurt your career showing up late or both to get more and more in each morning.
Split routine can hurt sleep if done too late.
Can’t meet friends for coffee in the morning (which might help with your stress) because you are stressed out about making your mileage or hitting your next personal best.
All numbers (weights, mileage, time spent in the gym,…) have to keep going up until you burn out under such a big workload and huge exercise-created calorie deficit. Severe injury can sideline you for a while and permanent joint issues can evolve.
Add these up and
Might better say that addiction transfer is a dead end concept - better to deal with the root cause of the addictive behavior (mediation for its therapeutic effect and, if needed, psychotherapy).