>>92087As someone who has several private videos, I can tell you why.
I've had 2 separate accounts banned due to having all my videos public, and people making copyright claims against them. Usually, what PH does is ban your account if you get 3 claims against you.
HOWEVER: by making videos private, you remove that risk, since the people making the claim would have to be friends with you before they can view the videos and then make a claim.
So the idea is that you make the videos private so they can't make a claim against it. THIS is why people don't accept friend requests unless you have videos uploaded yourself, because there are a lot of sockpuppet (Ugh, I hate using that term, but it's pretty appropriate in this context) accounts that are basically adding people to make DMCA claims against accounts.