ya i don't think people have thought about this fully solutions to problems becoming more bespoke, and private, isolated, and illegible to others does seem to imply problems that show up at scale (beyond the level where any individual with an agent could solve) will be harder to solve, not easier
The whole point of open source software is to cache common solutions to common problems. Expecting users to customize *without explicitly asking them for PRs* is leaving a ton of value on the floor