There's still good deals in mini PC land. Yes, the M4 is faster but there's loads of mini PCs with decent CPUs, 32GB RAM and a 1TB of SSD storage for under $600. I think for a lot of people for basic usage they'll get more value out of the larger and upgradable SSDs than the faster CPU.
https://www.amazon.com/BOSGAME-5700U-Displays-Computers-Emul... https://www.amazon.com/Beelink-SER5-Desktop-Computer-Graphic...