yes, OP might want the "flaw" however it still could be discovered by somebody else and eventually patched, next week, next month, ect... just because you use bug now does not mean it won't be "fixed" (or broken worse) in the future.

personally if i were in OP's shoes: i'd hope that said company has a bug-bounty program and use that for a little side cash and a "look what i found" - along with denying auto-updates to my own devices to keep utilizing said functionality (ive always been a fan of choice vs enforcement of arbitrary updates).