The amount of legacy retirements exceed the current number regional pilots (give or take).
Unless you are a complete and utter moron, who posts racist or politically charged BS all the time, chill out. Seriously.
At almost every airline it is a complete lottery ticket to even be selected by the computer/algorithm for an interview.
I’m 10 years into this career. I’m at my 3rd airline now (one on my top 3 list). I have certainly posted or shared some dumb BS at some point in time on SM (show me someone who hasn’t). I’ve gotten 3 different airline jobs and never been asked once about anything.
I have lots of friends in the 9-5 corporate America world. SM is a big deal in that spectrum. The airlines? I’ve yet to meet anyone in this brotherhood who’s been told to F off because of what they posted on FB.
Again if your an idiot online that’s one thing, but most people act like the decent people they are. YMMV