I agree for the most part, but there is plenty that a drill press can do without much risk. Working with plastics and aluminum doesn’t produce the significant side load that steels do, so with an industrial grade machine you are probably OK. Not always, but usually. My Clausing from the 60s has been rebuilt and hold tight enough tolerances for now. I already have a set of bushings and bearings for when I kill it though. Cutting steel (I have, and will again) has to be done with extreme caution and I’m only taking off a few thousandths per pass. I rough in the shape with drills and grinders then finish with slow and deliberate motions stopping every few minutes to put pressure on the chuck to make sure it has t come loose. So far so good. An actual mill is a far better tool but it’s much more complex and takes more training to run it because a drill press is basically an on/off switch with an up/down lever. Brass is also drill press machinable but it also takes great care to not mess it up. It can be done with care, but it has to be a great deal of care and a whole lot of attention while you work.