Yeah, this is the downside of newcomers paying for the mining fees of remixers.
If there are no newcomers, then it is not possible to coinjoin at all with whirlpool.
This also means that on average a user can only remix 2.4 times.
Wasabi never had this problem, you pay for your own blockspace, and so you can do it whenever you want to. On average the remix ratio is 20ish with WabiSabi.