It seems the main issue people have with this system check is that it kinda makes them choose over PSN or homebrew. Get another system, or a PC for homebrew. Sony always had access to what you did on your ps3 before this firmware. What games you played, and what you bought. Hackers felt like they had to delete files before they logged onto PSN, and they developed something to do it automatically so everyone here was aware that sony already checked their system. So it can't be that surprising, keep the ps3 offline.
Install new firmware from new games and the PS3 won't be able to send your social security number to sony.
As for the fear that hackers will take over Sony and PSN to steal your ID's just remove the information from your PS3 and don't log on when it's on the news that sony lost control of PSN to hackers.