Where are you getting that impression from the parent post? Maybe they were on a 2, 3, or 4 year upgrade cycle and still had a bunch of Intel MBPs when Apple Silicon hit the market. That'd be extremely typical.
What dev shop immediately buys all developers the newest and shiniest thing as soon as its released without trialing it first?
We stuck with Intel MBPs for awhile because people needed machines, but the scientific computing infrastructure for Apple silicon took more than a little bit to get going.
But with the general power of the base model Apple Silicon I don't think most dev shops really need the higher end models, honestly.