They’re trying to manage expectations by saying Mac sales in 4Q will be weaker but once they release M2 Mac Mini and M2 Mac Pro, they will sell like hotcakes. It doesn’t hurt that building a PC is now quite a bit more expensive.
I think we'll see a big boost in Mac sales when M3 drops. It'll be on 3nm and should be a much bigger upgrade for M1 owners.
Mac Mini doesn't sell enough to matter much.