Yes because they're completely different setups. People need to stop looking at geekbench scores. It's not just about the % increase in some specific task but the capability of the chip itself. The m3 may very well have many new capabilities not just faster at the ones it already has. And it's not all about the chip. Right now I'm writing this on a 2020 13" MBP 8GB and it's done everything I've wanted from it. I don't code all day or do video editing. I'm the other 95% of the users out there that just like a well built machine that's a great daily driver. I once flew from Dubai to Houston watching movies and didn't need to plug it in. That was insane. Being able to plug this thing in, charge it up, and go to work all day without taking a charger is fantastic.
I'm not the biggest MacOS fan, though. I'm held to the macbook because I use messenger and airdrop A LOT. I hate the file system vs windows. If I could get messenger to work on windows and a laptop was made with good battery life, speakers, screen, and trackpad then I'd be 100% for it. I want to love the thinkpad x1 carbon's so much but right now they're behind the curve on trackpads, audio, and cpus so I don't.
My point being there's a lot of reasons to want a refresh and the CPU is just part of it. If that's the only reason you want to buy a machine then might not be worth it. For me I'm really fighting the urge right now to get the 14" M2 MBP simply because of the XDR screen, better speakers, etc. I don't need to say I'm a video editor or content creator to justify my purchase. I spend half my life in hotels and I'm not going to spend it with some janky setup. If I worked at home and barely unplugged my machine that's one thing but I live off this 200 days a year on the road. So I'm eagerly holding back as best I can to see if something new comes out this month. I have 400k Chase Sapphire points I'm sitting on I could just use with gift cards for 10% off so I might really treat myself this time around.