There are a few reasons some trader might blow up, but "buying support", and "selling resistance" are not two of them.
Support and resistance are all relative. If the PA drops further, then that support is just a continuation of downtrend and could become the new resistance and if the PA keeps going up then that resistance is just a continuation of an uptrend and could become the new support. People have blown up by buying support which is called bottom fishing and selling resistance which can get them short-squeezed which is even more dangerous.