Poor vendor software support is also expected, because it's too early into development of the RISC-V architecture for software to have universal support on different hardware variations.

What that leaves is a need for good documentation, but Orange Pi does have that: http://www.orangepi.org/orangepiwiki/index.php/Orange_Pi_RV2

If you're not working on RISC-V-specific development, than it isn't a product for you, but with step-by-step guides for building uboot and the linux kernel, as well as running various LLMs on the TPU, it is very well supported for the current RISC-V audience.