Agree. Seriously if the dude's con was just being intimidating and standing out, it's not like a cloak and hood could fix that. Dude's muscles could carry a crapton of load and supplies, tank for you in case you get ambushed by enemies, and racial ability probably includes some note-worthy magic resistance. Plus, guy could give a good scrubbing if they decide to go to a hot spring inn (unlike loli that can't enter the male's bath), carry you out of battle if you get disabled and you could get a connection to dragon race villages if you have him as a companion.
This is one of the rare MC where he questions the morality of owning a slave. Not like the others where they just accept or even excited to own a slave
MC: Slaves are no-no where I'm from.
Butler: It's normal here, bro.
MC: Kay.
Then goes on to get the injured traumatized female slave that nobody wants so he can cure her and have her become waifu #1. Like, you know, almost every isekai with a slave waifu.