Would a builder risk his reputation knowing he wasn’t legally allowed to conduct the work?
There are buildings falling down all over the country where a builder and/or surveyor has said it’s ok.
Until it is independently proven it’s safe and will last for the expected life of the building then you’re on the hook.
Too many builders and surveyors don’t care about their reputation, only the dollars.
If I was living above you I would definitely insist that you and any subsequent owners assumed full liability for any future repairs caused by the removal of the load bearing wall. This must be documented by a by-law.