We live in trying times. Looking at history you just don't want to be at the center of plagues or wars. Supplies are impacted as well as staffing and now shipping delays.
I don't order much fabric any more. I've always had very good success with eQuilter being in stock but earlier this year it did indeed take more like 3 weeks than 3 days to receive my order.
I wouldn't hold it too much against the companies and blame it on Covid, but I myself am in a feud with a major chain because of a non-delivered order during storms and weather a few years back and the subsequent dealings with customer service. The missing order I could have overlooked, but not the customer service.