Frankly, it was a rarity back when I started out in the 70s for european touring and race bikes to have braze ons, period. That was custom or certainly better grade stuff (1k bike at the time when a Volvo cost 3.5K). All the pumps, cables, water bottles, racks, even the downtube shifters, were held on with little metal bands that somehow clamped around the tubing. So it's a nothing to have to mount this stuff with hardware. Sure it isn't the current standard. but it works fine.

Another option is to carry your gear in a backpack, this is a horendously bad idea, except that it's possible to carry the gear (includes camping) for an endless trip, in a pack weighing 8 pounds. That's what a lot of paniers weight before anything goes in. That would not include food or water. The point is just that at some level the load gets so light the weight either on your back or bike is prety trivial. There is a story here, where their backpacking trip ended up a Wal-Mart bike trip with their lightpacks:

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