The team wrote in an announcement that they had no choice but to sell the treasury wallet to drain the liquidity pool, which is locked to... well, stop the project team from draining the project and rug-pulling. At the time of announcement, the project team had around 950 ETH (~$1.5 million) in the treasury wallet.
Some pointed out that they could simply set the tax to 0% and carry on without the hefty sales tax, but that didn't seem to appeal to the project's creators. Some also speculated that the team might just take the money and run after draining the LP.