This is very true. It's entirely who you know and how perfectly your personality matches everyone else. You will tire quickly of hearing about "networking", and even that seems restricted to who you
already know.
Being a cliquish "match" here is more important than your degree, training, experience, certs, or anything else. There is not much variety in workgroups here - if you're not a perfect match from the start, you don't get in. Hence the reason you won't get a job here unless you have the right "connections". Think back to high school.
If you're looking for "IT" work, it's very saturated here and employers prefer cheap new college grads. Most positions are entry level and are meant for UT students and grads.
Watch the flaming responses that will follow and you'll see. While some of these issues can be found anywhere, it seems employers here are rather extreme and defensive about it. Perhaps interviews are too much work, or it's easier to have everyone be exactly the same
And yes, I've seen some insane flakiness in the job hunting process. Be prepared for retracted offers, interviews cancelled without notice, and living from short contract to short contract.
Not trying to be a pessimist, I just think you deserve an honest answer beyond all the hype. Much of the advertising is to attract business and investors, and not an accurate reflection of tangible opportunity here.