It was a very specific failure mode of the MD-11 rather than trijets in general, the jet engines of modern airframes do not detach from their pylons like that to the point the only times it has never happened to an airliner airframe more modern than the MD-11! They've already solved engine placement and design to make the risk of debris ingestion if engine 1 or 3 has an uncontained failure effectively a non factor at the energy levels that wouldn't just take out the wing hydraulics and be unrecoverable anyway.

The actual downside of the trijet design is that 3 engines is more than 2 and thus cost more to operate, the same reason quadjets died out in the airline space.