I always envisioned anti-seize for things that are disassembled much less frequently, like cartridge BB 's or bolts used to mount racks. I find the M5 bolts that are used in dropouts for rack mounting, etc., are a tad more likely to get rusty. Seat posts seem to be a bit more out of the elements, so traditionally, I greased them. Upon reflection, though, I might change that over to Anti- seize for seatposts, as well. The rest of the more routinely dismantled threads get grease ( anti -seize is so much messier!). BeforeI learned about anti-seize (mostly from DIY auto repair) I used grease to no ill effect. I would use white lithium grease in places like lower headset bearings or the BB where water might get in. With the waterproof "marine bearing " greases, I no longer fuss with lithium grease at all.
In the automotive world, there were once sticky "assembly" greases that were intended to be displaced by or augmented with thinner hi- temp greases or lubrications. The marine grease has a similar viscosity as the assembly grasses of old. I like synthetic grease, like Super Lube, for my Sturmey Archer IGH's, as it doesn't thin out or wash out from the oil inside the hub.