"thred"? really?

Is "thred" a generally accepted alternative spelling for "thread" nowadays? Some wacky sneaker bling website is consistently using "thred" where I think they mean "thread".

But maybe I'm just very behind the times or something.

(I wasn't interested in the product, so I wasn't going to buy from them even if they could spell. I'm not giving them any link love here, either.)

In general, misspellings in online advertising are a useful way to identify vendors which may not be detail-oriented, or are from countries where I might not have any recourse if things go wrong.