These extreme generalizations are not accurate, in my experience.

There are some cases where someone new to Rust will try to use Arc as a solution to every problem, but I haven't seen much code like this outside of reviewing very junior Rust developers' code.

In some application architectures Arc is a common feature and it's fine. Saying that seasoned Rust developers rarely use Arc isn't true, because some types of code require shared references with Arc. There is nothing wrong with Arc when used properly.

I think this is less confusing to people who came from modern C++ and understand how modern C++ features like shared_ptr work and when to use them. For people coming from garbage collected languages it's more tempting to reach for the Arc types to try to write code as if it was garbage collected.