It wouldn’t be insane, but it wouldn’t be advisable as a long term solution. USB-C charging ports invariably fail, mostly because of mechanical stresses. And when they do, it’s much more sensible to replace a 10€ expansion card than the entire mobo (or the entire laptop for the competitors).
Besides, you don’t buy a FWL if you’re strapped on cash. You buy it as a gamble on the future to reduce your e-waste while keeping relevant. Plus, there are smarter ways to reduce cost, like buying your ram and ssd elsewhere.
I replaced the idiotically loud motherboard fan with a 24V 40/10 Noctua. It needs slightly longer screws than the stock ones but otherwise it’s a drop in replacement. Noise levels are much more acceptable now.