A thread about this hairstyle again?
Ahem...

258 runs (255 runs for relic and 3 runs done prior from starting the first relic weapon's last phase), only 3 mounts. No barding nor hairstyle, at all
Meanwhile an FCmate who had cleared all relics like I did looted 7 hairstyles, 1 barding, and 9 mounts.

That's RNG for you: RNG do be like RNG.
It's working as intended, to artificially extend the content's lifespan. (for now)