This time CY0S but it is a frequent fad of incapable "DX pedo" Ops wiping out others QSOs + QRP & Popular Club CoA's without a care in the world, except their own ego and incapability masked as "DX".
All the stations calling them are violating the regulations by not listening on their TX frequencies, and the DX is incapable of using any filter in their brain. Time to again hear the advice of experienced DXer 5T0JL (30CW0) for whom these DXPedos are no match!
Let's not make fun at the expense of many others, see the advice how to operate a pileup without the unnecessary non-defined "UP" and resulting pollution and disruption of others enjoyment of CW.