> However, asking questions and improving understanding of the system and architecture is actually faster and easier for them now than it used to be.

One of the things I've built in my current role is tooling to help understand current architecture, and to resolve the differences between things as-documented, as-implemented, and as-actually-behaving. It's used for a few things, including updating documentation, but it's been most impactful when onboarding new engineers. They can simply ask questions about how things work and why, and get explanations and deep dives wherever they need it.