They've been saying that for ~30yr.

While you can definitely make a respectable living in the cybersecurity industry the fact of the matter is that over that same time period the people vomiting JavaScript trackers all over the internet made the same or more money with less effort invested.

This is all “Do as I say, not as I do” advice.

Sure, go into security, help make the world more secure... meanwhile I’ll be here writing some JavaScript making twice what you make and working probably half the hours you do.

Yeah we're still in kiddie shit days playing with firecrackers and poprockets.

Wait till we get our M2 Browning.

I suspect that the first iterations of the M2-equivalent already exist, we just haven't seen them put to use against visible targets.