I think part of the problem with supposed "clean" code is that it tends to be a matter of opinion. Is the polymorphic version cleaner than the switch statement

I think part of the problem with supposed "clean" code is that it tends to be a matter of opinion. Is the polymorphic version cleaner than the switch statement version? I would argue the latter is actually easier to read. There's no real reason to think "clean" code is actually clean other than anecdotes and that someone wrote it in a book, but the performance is something that can be objectively measured.