Then btc off course not moving and few top coins also will not move but this situation is not bad becouse each team will pump their own coins so we will see most of market stalled and 1-3 coins pumping its get urself in the team if you want to eat each team will pump their own coins.
Only small projects with small marketcap could possibly do this. Few projects could pump and manipulate their own coins but mostly, they only do it for their own benefit that's why it's risky for investors to invest on manipulated projects. Dip wouldn't be a threat as long as you already know how the market moves and you're holding potential coins.