How much rest is too much rest?
Technically anymore than you need to recover from the workload you’ve done short term e.g. workout to workout and long term week to week as fatigue accumulates.
Would rather rest more and deload before I really need it then accumulate excessive fatigue, under recover workout to workout and ultimately/overall progress slower or stall out.
Gains are made by SRA stimulus recovery adaption. Recovery/rest is as important as the stimulus to making gains. Doing more will give you more gains if you can recover from it. Replacing rest with work is risking your gains.