I'm an MLE and SWE, so it's not like I can't read code or don't know any proper practices. What is different though are that

Since we are not spending 6-8 hours a day working with the code base unlike pre-coding agents, we lack the indepth knowledge and intuition that helps us narrow down root cause when bugs arise, or know how to best extend the current code base to support a new feature

Because of the productivity from coding agents, the size of the code base and sophistication of the app relative to number of developers has also increased. Each developer now needs to maintain context and understanding over a greater surface area and number of micro services. Over time this makes reviewing extension to the app and code base increasingly more difficult cognitively.

Anyone else dealing with this too? Is it just a problem with our engineering processes? What works for you?