Disagree. In the gp’s context, which I understand to be a new lifter skipping a set or superset due to time constraints, this is good advice. Simply performing the lift rep takes time, better to skip ten skull crushers than ten squats.
Rest matters a lot less when you‘re estimating rep x weight combos rather than dialed into rep counts that bring you within one of failure. An untrained lifter should be seeing gains so fast that the weight changes every week, in some cases they may not even be able to adjust in sufficiently small increments — for example progressing a 10lb bicep curl to 12lbs is only possible if you have a 12lb weight or +2lb accessory but jumping to 15 would be too much.
Rest matters a lot less when you‘re estimating rep x weight combos rather than dialed into rep counts that bring you within one of failure. An untrained lifter should be seeing gains so fast that the weight changes every week, in some cases they may not even be able to adjust in sufficiently small increments — for example progressing a 10lb bicep curl to 12lbs is only possible if you have a 12lb weight or +2lb accessory but jumping to 15 would be too much.