It's a precaution that's mentioned in service guides. If you're feeling confident, then power to you.
Yes, disconnecting airbag connectors without disconnecting the battery has been done before. So have texting while driving. But I wouldn't recommend it.
*Disclaimer: I'm only sharing my opinion. You didn't pay for it, so my opinion is only worth that much, haha.<br />2013 GMC Terrain SLT-1, FWD, 3.6 V6 (LFX), Sunroof