Both promote suffering for entertainment. In both cases that means both contestants and societal impact.

In dog fights, dogs get killed and people seeing them normalized get desensitized towards animal cruelty.

In pageants, models are incentivized to starve themselves and to subject themselves to cosmetic surgery, and people seeing that normalized feel like they need to do the same because of body image issues.

I think the comparison is pretty spot on.

How? I genuinely believe there's no real value in shallow events like this. I'm from Thailand and their kinda big deal here but nothing positive ever came from one other than some memes. Fortunately pageants are in extreme decline and they'll be gone without any particular effort from us.