As with any pump and dump, their play is to sooner or later trade out of the 150+ billion (80%+) premined coins. Trying to make a big enough pump to do that in todays market would be difficult if not impossible. The market won't even support selling 1k-2k USD per day. So the most sensible strategy is to keep it somewhere viable in the rankings at minimal cost, wait, and hope for a better chance to exit.
Their only hope of cashing out is a massive crypto bubble where every shitcoin in the Top 50 is getting millions thrown at it by panicked investors who aren't taking the time to research each one.