They are splayed that way to allow the spring tension to hold them in place before soldering. Mostly for benefiting automatic processes. Most ICs globally are not socketed.
I once had a ppcb shipment end up in Puerto Rico (I'm on the mainland) bouncing around local post offices for about 3 months before suddenly being delivered (mostly) intact.
It is freaky the first time you see it. Eyes popping in and out 20 times a second. They look like their head is about to explode like that guy in Scanners.