There's more. If you feel that way, you have your simpler cheaper way of getting to your means. All parts fail when subjected to methanol, so to only replace one is a sure setup for more failure. Like blowing a head gasket and only doing the gasket, not surfacing the head.The only mod he does is the connector plug and the diaphragm under the switch held in by three screws.
I'm not speaking for you but it would be nice to be able to buy just the part that fails which is the diaphragm under that switch.
Now if the pump was older and showing signs of wear and corrosion I would be on board with your theory and send it in for a rebuild.
The problem is that whether you use the pump or not that part fails almost like clockwork every three or or years.