Not a big enough jump going from Coffee Lake to Alder Lake, in my opinion.
I've been looking at new computers and one of the things to mention is that the Intel processors are some of the hottest and most power-hungry they've ever been on this newer process, Intel 7 (10nm).
The upcoming Raptor Lake processors will also be manufactured in Intel 7 and they are increasing the number of cores, so expect a bit more performance from that update. AMD's Ryzen 7000 series will be built on TSMC's 5nm process and they've increased the maximum power limit to 230W (15% performance increase estimated).
In my opinion, the value proposition hasn't changed radically for most PC users, especially desktop users. You're more likely to notice an improvement from other factors, like a new monitor, better speakers, larger SSD drives, or 10 Gigabit Ethernet or Wi-Fi 6 in daily use.
Yes, GPU and CPU power is important in gaming and some other applications, but they haven't pushed CPU and overall system performance as heavily because of the number of people using older hardware in the market and delays in software development. The last few years of supply chain shortages haven't helped things either.
Prices are starting to drop, thankfully, but I think a lot of people are still waiting for really substantial changes to come down the pipe (like the new Nvidia GeForce 40-series and AMD Radeon RX 7000 series GPUs) rather than incremental changes like PCIe 5.0 or DDR5 that take several years to fully optimize.
People are still waiting for Windows 11 to implement some basic features, too. I played around with a co-worker's Win11 system, but it didn't seem much better than Win10 to me. Here's a list of missing features:
https://www.windowslatest.com/2022/04/03/should-you-upgrade-to-windows-11-heres-a-list-of-missing-features/