I can only imagine that the people spamming "LOOOL PHP" are either programming amateurs, rank green students or just people bandwagoning on internet programming memes.
If you really did work in an IT related field where using or not using PHP is a consideration for you, you would at worst acknowledge that PHP has faults that are not directly related to the breach, at best you would have said nothing. PHP has decent-good performance, can be implemented broadly for just about anything, and you'll always be able to find someone who can build it for you.
The most clueless are those who insinuate that not only is PHP bad, it's dead. Please, almost everything uses PHP, and while its not going to be as popular in the future, it's going to continue to stick around for years if not decades.
As for the session credentials issue....well I agree with some here that accounts with admin rights should always need to reauthenticate. Is it a criminal sin for a site that doesn't store much sensitive information beyond internal activity and login credentials?....Hardly. I'd just say it's something that can change now that this has happened, but it's not exactly a huge mistake.