This comment is wrong

$_ = "dlrow ,eerhT";
print reverse $_;                         # No output, list context
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you get the one-element list ($_) reversed, which is the same list. Harder to spot since you forgot the newline this time.

reverse does exactly like documented and explained by choroba

• In list context, returns a list value consisting of the elements of LIST in the opposite order.

• In scalar context, concatenates the elements of LIST and returns a string value with all characters in the opposite order.

I think you are misunderstanding how context works, it's the LHS which decides how the RHS of reverse is interpreted and print always induces list context.