For the reader, that's not only an apt analogy - it's a chemically accurate one. Structurally the difference between methamphetamine and amphetamine as well as between ethanol and methanol is a methyl group.
Pharmacologically it's a different story - methanol is not a safe substance with any dose.
Addendum: This isn't to imply that methamphetamine has dosage that eliminates its side effects and neurotoxicity, but rather that drinking methanol will quite easily make one go blind.
Pharmacologically it's a different story - methanol is not a safe substance with any dose.