The judge presiding over the Harry Barnes case disagrees with you and their opinion is much more important than yours because it sets a legal precedent.
[22] I find that the cabinets in which the defendant's prohibited firearms were stored fall within the definition of a· safe. Both ofthe lockers in which the prohibited firearms were stored were made of steel. Each cabinet was securely locked: one by a key and a padlock; the other by a locking system that uses a key to unbolt rods in the door from the frame of the unit. Indeed, despite their disagreement on other issues, the Crown and the defence expert both accepted that the units were securely locked. The Crown has not proven beyond a reasonable doubt that there was non-compliance with the regulation. The charges are dismissed.
I keep hearing people say that those who defend the cabinet as a safe position are wrong, trying to be lawyers or misinterpreting the written law etc. I think they're just trying to educate some on the current legal precedent set by the aforementioned case.
And the end of the day you have two choices. Put trigger locks on them anyway or don't and possibly (although not likely) defend your decision.