Exactly. Which is why I said in an earlier post, only mining and AH luxes are safe to gift. Mining being the safest path to take with worker first but AH is in archery path and is not a terrible first tech. Your luxes are gypsum, marble, diamonds, silver, jade, salt, furs, ivory, truffles (and occasionally, "horses"... now if AI will offer you money for horse, which is not all the time, but occasionally, you may treat it as a lux as it gives a huge positive diplo modifier same as gifting a lux) which is probably roughly half the time. Plantation and sailing luxes are terrible to open builder with. They are simply connected too late, and irrigation does nothing for you in the tech tree that leads to a strong military unit, to save your ass against an aggressive neighbor. If I have plantation lux, I might even open monument and beeline archery (getting the agoge card just by having extra culture without taking eureka), not scout, if I want to play risky (at least the monument has a definite benefit... whereas I think scout is not a promising investment most of the time).
Btw I don't really understand why Victoria says the builder pops out 5-6 turns before the tech is complete... actually AH or mining takes 8 turns for me... and I generally take 8 turns to build a builder as well. Unless Victoria is working a hill forest deer tile or something.... btw a single slinger is not going to kill any warriors by itself on deity (at most it does 20 damage per shot and has to be garrisoned otherwise they just fall in melee to fast) and the AI usually promotes its units so it takes like 8 shots to kill one... the slinger is there to become an archer ASAP so that the early attack is repulsed... building a straight archer is too slow.
I never said builder first is always optimal of course... but I think it beats scout first in my case...
Yet, as Victoria seems to point out... I have probably need to learn new tricks about how to mess with the barb's AI using the scout.... usually my scout doesn't really help at all if by "divert" you mean just run him away before he gets killed... and I certainly don't see barb scouts getting killed by my scout nor does it seem to make him run back...