I don't think this is related to the quality of the dongle in any way. I think Apple just really messed up the implementation of the USB PD standard.
Mine died after connecting it to an original Thinkpad X1 Carbon charger, which I used for a year and am still using since without any problems on my X1. In fact, this charger costs more than the official Apple one. I also used it a few times with the Macbook before it eventually died immediately after connecting it to the charger.
Mine died after connecting it to an original Thinkpad X1 Carbon charger, which I used for a year and am still using since without any problems on my X1. In fact, this charger costs more than the official Apple one. I also used it a few times with the Macbook before it eventually died immediately after connecting it to the charger.