Sony should not have claimed copyright and should not have used it without attribution.

I'm however not sure of the legal status of components of LGPL software that are downloaded components of a hosted service. If they are not "distributed" the license brings no requirements does it?

If the client downloads it, it is distributed.

LGPL is interesting when used in the server software itself. Then, it doesn't have to be distributed, as the server software itself is never provided to the client.

The icon is distributed as part of the UEFI firmware (if the blog post is to be believed).

They seem to be followin the "ask for forgiveness, not for permission" philosophy!