the baked xmr funds are once again swapped into virgin addresses that all buy your memecoin, with your clean funds you sell your position into the liquidity pool of the pumped coin
it looks the same as any other launch. are they bots, are they retail degens? who knows, pay capital gains tax and move on.
you can modify this by having the virgin addresses with dirty funds launch and pump the coin too, as long as your clean address buys near the beginning and sells into liquidity
this can all be scripted and done with unlimited amounts, a “bundler” can manage many virgin addresses with a nice GUI now, specifically to be multiple buyers and sellers of a launch
you can unlink your clean funds in less (or equally) restrictive ways for other reasons and privacy, but its clean enough to pay taxes on and be free and clear