@E3L1 Not really, the packages you mention are alive and well on Raspbian Buster and that's not the reason RetroPie doesn't support yet fully the PI4.
Care to share a reference to the quote you posted ?
Tinker Board doesn't have as much support as the Raspberry Pi does. But, it's GPU is much faster, at 600 MHz, versus the Pi's 250. GPU performance is the biggest hindrance in N64 emulation. Main reason why N64 sucks on the Pi.