This is true, but by training I as much mean vetting. Drills are very expensive and the PBF one is not insured (maybe it should be). Also, bad bolting can and does spoil routes, or can even be dangerous, either way it’s a pain in the arse to sort out. The BMC info is brilliant and pretty (but not fully) comprehensive, however it doesn’t guarantee that the reader has good judgement when it comes to picking where to put a bolt vis-à-vis rock quality, proximity to old bolt, clipping position etc. Many people could learn to drive unsupervised from reading a book, but I wouldn’t necessarily give them my car keys and send them out on the road on their word alone.