It’s not about conservative vs progressive but about “safe, battle-tested, stable” vs “could be amazing future-tech”; and the idea of having a small number of innovative technologies, in particular where they matter, is about allowing yourself to spend all those thought-tokens on areas that matter.

You don’t want to be innovating your logging tech or your database if the old will work because you might spend 90% of your time trying to get your new, creative logging solution working when you should be spending it on the creative part of your business.