Absolutely true. Hard truth for some but tenure at a big company working in some internal framework is often next to useless at another company with a different

Absolutely true. Hard truth for some but tenure at a big company working in some internal framework is often next to useless at another company with a different tech stack (thinking in a custom C++ library framework instead of thinking in well known open source frameworks). Some skills carry over (especially soft skills that are so often under-invested in by engineers), but some just don't.