It might have been dropped from some nodes a while back, but now it's back on. Looks like it was rebroadcast an hour ago, according to blockchair.

Why would a service do such a thing if the transaction has been dropped from the mempool without even thinking about modifying the fee rate?
It costs nothing to do it (rebroadcast it). Then hope that fees drop to say 5 sats in a week or 2.
The biggest issue is recipient waits for his $$.
This problem is not going away for this and lots of other transactions.