Yes! Precisely! And since you can use qr// for when you want maximum speed and maximum control, there is no reason to ever use /o. Ever!

It should be deprecated from the language because the best it can do now is provide a slight speed boost (which you can still get by using qr// instead), but the worst it can do is break your code.

Most of the times I see people use or recommend /o these days are cases where it makes absolutely no difference at all, or where it breaks their code.

        - tye (see also /o considered harmful)