Cutting road bar into aerobar......any reason why not to?

I have a extra road bike bar that I cut down and flipped over,the shifters/brakes seem to work ok.I was wondering if there are any saftey concerns or negatives about doing this ?

Kind of old skool style, but it works on alum bars for sure and probably on carbon.

None at all. That’s how they did the first funny bikes in the 80’s. Add some clip-ons and you’re golden.