The author argues that starting with 6502 assembly programming is beneficial due to its simplicity and the abundance of resources available for learning. They acknowledge that 6502 may not be as useful for real-life applications, but emphasize the importance of understanding basic assembly programming concepts. The simplicity of 6502 with only 6 registers and 56 instructions makes it a good platform to grasp fundamental ideas. They highlight the popularity of 6502 in historical microcomputers and the availability of emulators and new machines that run it. While other CPUs like Z80 or ARM may be better for serious programming, the simplicity of 6502 makes it a strong choice for beginners.
https://nemanjatrifunovic.substack.com/p/6502-is-a-good-starting-point-for