The inhouse tooling from the massive tech companies is very cool but I always wonder how that impacts transferrable skills. I work in a much smaller shop but intentionally make tech decisions that will give our engineers a highly transferrable skill set. If someone wants to leave it should be easy to bring their knowledge to bear elsewhere.
Also my collection of hobbies seems to match up well with the people who nuked their post history after the API-ocalypse. Even when I get good search results I click through and… so many deleted comments…