So for this specific case, if Chrome wants to hide URLs, go for it; and I'm sure there's a configuration toggle somewhere to turn them back on if you're one of those people who care.
But imagine this happening, average users will become fully IT illiterate. Growing children will no longer know anything about computers, as they grew up in an environment where everything is hidden from them for sake of simplicity.
What will happen, after our generation(s) all get old, and the growned up illiterate children take place of improving world's technology?
We might have an engineering shortage in future ( we do already ), but it will be for many factors , not just lack of opportunities to tinker. If it isn't addressed, we will go long periods of time without nice things (think of the relative stagnation of the web from 2000 to 2008).