Yea of course. Gotta only give it to actual businesses that have a reputation. Never to any private individual.
A rental/realty company with several properties asks for an SIN to rent an apartment in one of their complexes? Sure.
A shady old guy who’s renting his shitty basement for the price of his entire monthly mortgage payment because he’s broke and behind on child support payments? RUN lol. (Unless you want a leaky toilet, mold everywhere, bedbugs, and a court notice asking money for that shit as you have your identity stolen)