Those recruiters aren't calling for your benefit tho'. They are calling because they want to sell you like a piece of meat. That's just a sign that nearly everyone connected to the industry who isn't actually an engineer themselves is trying to exploit engineers in some way.

What they lack is experience, but as the technology landscape changes every second year many believe experience doesn't matter

People believe what is to their advantage to believe. Getting an experienced engineer at a knock down rate because they've been tricked into undervaluing their experience suits VCs and managers very well...