I also moved from development to ops and am now at a company with a large engineering organization.

Most developers don't care about ops. They expect everything to "just work" and they don't expect to have to help that process along with the way their code is written. It doesn't matter how junior or senior they are either.

I'd say more than 50% do things that are extremely irresponsible wrt resource utilization. Especially if it's I/O.