You can say Holding is a Bullshit if your coins that you hold is Bullshit, no future, low potential and no improvement. Think before you Hold a coin/s, and do a lot of research to find a good and high potential coin/s to hold and invest. I have held btc and ethereum for 1 full year and I don't regret ever holding them,  I made over 1000% gain by just holding this coins.  So you should not say it is bullshit to hodl coin but say it is bullshit to hodl shit coin.