I would expect this to be a temporary blip and, assuming no more lockdowns like we had at the start of the pandemic, things would be more similar to what you'd normally expect for next season.
At one point, our usual supplier had put all of its delivery drivers onto furlough because of the risks of delivering around the country, and couldn't source compost from its suppliers. But we've just taken delivery of a pallet load or two of peat-free multi purpose compost, which suggests that supply chains are getting going again.