> What makes this terrible advice?

Some PhD programs focus on non-marketable topics that don't help candidates develop marketable skills, and exist only to dump the research group's drudge work on an unsuspecting soul.

Wasting years of your life in a low-pay low opportunity dead-end job that's prone to abuse just to pursuit a pipe dream is not a great career move, particularly if the alternative is landing a job at Google.

This is all true! Entering into a graduate program without being fully aware of what you’re embarking on and what you’re getting out of it is a bad idea. But I would argue this generalizes beyond just grad school.

Some people enjoy scholarship and research. There are places that support this. To generalize only slightly unfairly, most of industry is not conducive to this kind of personal goal. Pipe dream it may be, but we still have artists and musicians.

> I picked up an excellent job after my Master's (at the same place I had left behind previously!)

It sounds like you would agree that joining a PhD program is not a good idea.

It sounds like you have read far, far too much into my message.