I'd much rather be on a freeway at 60+ MPH surrounded by 2.5 ton vehicles with poor visibility than riding an urban street. New riders are rightly intimidated by the freeways (they're fast, they're big), but they're far, far safer than the street with all of the starting, stopping, hard corners, folks turning onto the street, and, of course, the king of bike slayers, the "I didn't see them" left turn.
Not to mention all the junk on the streets: the oil, anti-freeze, gravel, wet painted turn arrows.
When freeways become unsafe is when the loose nut behind the handlebars decides to wick it up and just "go around all of these big slow things". But that's not the freeways fault.
First year/10,000 miles is the hardest. But the foundational rules apply: Wear the gear, slow down, don't ride impaired (drunk, high, tired...).
Lightning strikes, it sucks. But, anecdotally, my worst motor vehicle injury was while a passenger in a modern car when my friend drove into a left turning vehicle. "Fender bender", "no biggie". Chronic, notable, back pain ever since. Worst than anything I've ever suffered on a motorcycle.