It makes sense, it's just not good news for people hoping for a good income from such work. The rich started the war with off-shoring, and now they are recruiting the poor to make them allies in crushing the middle class. I'm not even remotely a communist, but in this case, the shoe kinda fits, you know?
Most PM methodologies encourage up-front planning, which is hard work and next to useless. Plan a little bit, do a little bit, see how things are going, rinse, lather, repeat. Many projects start out with grandiose goals, when no-one can say anything sensible. It's fine to make a grand plan, but figure out a small step that will increase knowledge about validity of the grand plan, and hopefully be independently useful. Plan that small step. Do that. One small step at a time, you make progress.
PM sorely tempts people into becoming schedule box-tickers, and tsk, tskers. The mortal enemy of PM's is usually "risk", it's all about mitigating or eliminating risks. When you eliminate risk, you eliminate opportunities. If you get obsessed with risk, it crushes exploration, and prevents you from learning what you actually should be doing. When you put too much detail in the plan, people become slaves to decisions made when you knew less.
Ideally, a PM methodology should understand that things go in phases, and when you learn methodologies, you hear about how they ought to be used, but often the hierarchy thinks that by controlling budgets and schedules they are "managing", but all they are managing is "budgets" and "schedules", which doesn't necessarily achieve any business goals.
The PM methodology that seemed closest to encouraging this sort of iteration is PRINCE II*, with it's explicit staging, and explicit re-appraisal at each stage. Start with a stage that involves exploring assumptions, and validating them, perhaps fleshing out the business case, and sharpening the objectives. So you go through the first stage, and you look at what you know and does the eventual goal still look reasonable? yes? ok: Plan next stage (not whole project, just one stage at a time.)
The ideas in PRINCEII are fundamentally good, but there is a huge risk in that organizations may turn any methodology into a counter-productive, soul crushing, box ticking train wreck. That's actually one of the primary, and most difficult, risks to mitigate.
*yes, biased, I took the course, and got PRINCE II practitioner certified a decade ago. Fwiw, took other courses related to PMBOC, and have seen other methods, lots of waterfalls, so my sample size is at least >1.
Have you reconsidered a computer career?