how much of these lower sales are due to the nigh non-existent 7000 series laptops?
I think its more along the lines of the entire industry being an a malaise. I don't think there's one single cause either.
First, (and I could be wrong) but AMD's mobile chips don't account for 65% of AMD consumer chip business, secondly, Intel and Apple are feeling similar downturns.
There's also companies like Nvidia and to an extent AMD that sought to maximize profits in an anti-consumer fashion. Nvidia during the GPU crunch could have produced more of the high demand GPUs but instead rolled out so many distinct GPUs, even 4 or 5 year old discontinued, all in the name of squeezing every cent out of the consumer.
This year Nvidia raised the prices of the 40 series, that made them significantly higher then their 30 series counterpart when those were released. AMD is not blameless, they could have positioned their new generation GPUs at a price point that undercut Nvidia and made some serious goodwill with their customers but instead followed Nvidia's lead.
Overall, as well know, life is more expensive and most consumers have less money to spend on non-critical items, and since many people upgraded or bought new computers in 2020, there's little need, add on top of that the gouging of the GPUs, it makes it harder for people to justify, even for those who want to spend the money.
Just my $.02
