Bare metal has nothing to do with this. It isn't even touched upon in the article. It discusses a scheduler, and the parent post suggests exempting these kind of jobs from the scheduler in question, which they obviously aren't a very good product fit for.

Should you wish to really stretch that car analogy, maybe a bit more appropriate than a horse would be: If you aren't happy with your travel agency aren't booking your taxi trips in time, try booking with the taxi company directly.