> I actually think a few folks like this can be valuable around the edges of software but whole systems built like this are a nightmare to work on. IMO AI vibe coding is an accelerant on this style of not knowing why something works but seeing what you want on the screen.

I would correct that: it's not an accelerant of "seeing what you want on the screen," it's an accelerant of "seeing something on the screen."

[Hey guys, that's a non-LLM it's not X, it's Y!]

Things like habitual, unthoughtful null-checks are a recipe for subtle data errors that are extremely hard to fix because they only get noticed far away (in time and space) from the actual root cause.