Comment by tialaramex

It's not helpful to think of it as "unsafer" but I think the way I'd explain this goes as follows:

Rust has some stricter and more complicated rules even than a language like C++. Just as in C++ you absolutely must obey these rules at all times. However, in Safe Rust the tooling will ensure that following those rules is never your problem. You don't even need to know what the rules are, just like you don't need to know why a plane works let alone how to fly it to get on a jetliner and fly across the country for $$$.

In unsafe Rust, it is your job as programmer to understand and obey these rules because the "unsafe super powers" you can use only in these blocks cannot be checked by the tooling, it can help sometimes but you can't rely on it. Writing ten lines of correct unsafe Rust is thus probably significantly harder than writing ten lines of C++. But the Rust programmer knows when they need to be at their sharpest, they need proper review by somebody paying attention, they need to slow down and think it through, versus the rest of the safe Rust where it's less scary, in C++ every line you write might be a fatal problem.

Basically, walking a tight rope is harder than everyday walking, but you know when you're on a tight rope, you've trained for it, everybody is focused on your safety - so actually maybe that's not a problem, lot of people get injured just walking about every day.