Sad to see Anker on the list. I used to think of them as a pretty reliable electronics manufacturer in a sea of low quality chargers and hubs.
At that time, comments saying Anker was the best peripheral maker flooded the internet and made me feel like I was crazy.
I know that USB-C can cause interference on Bluetooth/WiFi bands, but this was never an issue with properly shielded adapters.
They have been using "Apple" style packaging (nice "unboxing experience" kind of boxes) and include slogans like "americas favorite charging brand" (the broken english on their website doesn't reassure me) on recent products I've bought from them, so they are certainly trying to make a brand for themselves as being above the standard junk you can find on Amazon, but I wouldn't be surprised if it was rebranded.
Might be a issue on the other end of the thunderbolt connector.