No, you can't just take a statement and call it a "law", even in a facetious sense.
Murphy's law, Betteridge's law, or other facetious laws are at least roughly formulated as "if X, then Y" (or sometimes "Y happens"), which mimics the structure of actual scientific laws. Stallman's statement is formulated as "if X, then maybe Y" (or "Y could happen").
Murphy's law, Betteridge's law, or other facetious laws are at least roughly formulated as "if X, then Y" (or sometimes "Y happens"), which mimics the structure of actual scientific laws. Stallman's statement is formulated as "if X, then maybe Y" (or "Y could happen").