>>/47711/
> if that were the case sexual selection would push them to be larger not smaller
Yeah. They use the term "display". Makes no sense. Even their fucking example the peacock has large colorful tail to make it more conspicuous, sames with the antlers of the deer... Tinier and tinier arms are less and less noticable, not "eye catching". And wow you need so much powerful muscles and quick movements to hold your arms out.
You just know they start bullshitting you when they start to talk about sexual behaviour of dinasours. And colors. Srsly every time they go on that road I'd issue a fine for them.
Maybe they climbed trees with those arms, they had to grab the trunk and branches close to their body.