I mean... you do have to backfill around your drainage pipe, so it's not too far off. Frankly, if you Google the subject people misspeak about "backfilling pipes" too as if the target of the backfill is the pipe itself too not the trench. Garbage in, garbage out.

All the circumstances where ChatGPT has given me shoddy advice fall in three buckets:

1. The internet lacks information, so LLMs will invent answers

2. The internet disagrees, so LLMs sometimes pick some answer without being aware of the others

3. The internet is wrong, so LLMs spew the same nonsense

Knowledge from blue collar trades seems often to in those three buckets. For subjects in healthcare, on the other hand, there are rooms worth of peer reviewed research, textbooks, meta studies, and official sources.