That said, I do also use an R.Pi 4 and an R.Pi 400.
The significant advantages of the R.Pi 4 and R.Pi 5 are
= R.Pi is a learning-first platform
= current Debian supported "out-of-the-box" with a custom D.E. and Wayland
= excellent community for software and hardware
= the R.Pi 400 (and the expected R.Pi 500) "keyboard computer" are unique in the marketplace, with all the community and support
= R.Pi is not an X86 platform, which may be favourable depending on your project requirements