If you parse that as "(a ((scalar or code) reference)" then what you said wasn't wrong. However, if you parse that as "(a (scalar) or (code reference))" like morgon and I did, then you'll have to admit that morgon has a point.

However, a reference is a scalar of course, so technically a claim that "you can even bless a scalar" isn't incorrect as much as it's redundant, given that you can only bless references :)