Surprisingly, market ties unfortunately are a big deal in legal hiring (some above have now beat me to the point and given sound feedback). It sucks, but it is definitely for real. If you have high enough grades and go to a good enough school it may be less of a factor, but it is still often asked about in interviews and looked for by prospective employers in law.
Which actually brings me to my next point.
Many on TLS don't really "get" ties, and they assume that ties are like a box you check. So you hear 1Ls asking "do I have ties to XYZ place," or saying "RAD you're a MORAN, my bro bro got a jerb in XYZ parochial markets sans ties, so you're an idiot."
But ties aren't a box you check. Where (locationwise) you can get a job largely depends on a combination of 3 things: 1) your grades, 2) the prestige of your school in a target market, and 3) strength of your ties to that market. All this is in the context of the outside factor you can't control of how parochial that market is.
I've seen bros with no ties get 1L summer jerbs in Bham because they had good grades from UVA and Vandy (high on #2). Peoople with blah grades didn't fare so well. But I've seen those same people with blah grades slay in their parochial hometowns. I've seen dudes who went to the local school get fewer offers at less prestigious firms at OCI or struck out because homers got them instead. There are a million combinations to this.
But when picking schools, you don't know your grades, which is why you'll see people harping on ties a lot, because it's one of the things you DO know before you start, and you can account for it.