Screenfetch does not detect AMD GPU when I have both AMD and NVidia

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Bug report

I have both an AMD Radeon RX 6800 and an NVIDIA Geforce GTX Titan Xp in my computer. Screenfetch only reports the latter:

whereas neofetch reports both, although the AMD card shows up as "device 73bf".

The AMD Radeon RX 6800 is in fact the currently used device, as shown by glxinfo, which shows that AMD SIENNA_CICHLID is being used:

name of display: :0
display: :0  screen: 0
direct rendering: Yes
[... truncated ...]
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: AMD (0x1002)
    Device: AMD SIENNA_CICHLID (DRM 3.40.0, 5.10.13-arch1-2, LLVM 11.0.1) (0x73bf)
    Version: 20.3.4
    Accelerated: yes
    Video memory: 16384MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2

The AMD Radeon RX 6800 is also the bigger and faster of the two GPUs so it is preferred for it to show up if I had to choose one of them.

Previously, when I had only the AMD Radeon RX 6800 (without the NVIDIA Titan Xp), screenfetch correctly shows the AMD card (as SIENNA_CICHLID).

Probably the problem is that there is an elif here:

        if [[ -n "$(PATH="/opt/bin:$PATH" type -p nvidia-smi)" ]]; then
            gpu=$($(PATH="/opt/bin:$PATH" type -p nvidia-smi | cut -f1) -q | awk -F':' '/Product Name/ {gsub(/: /,":"); print $2}' | sed ':a;N;$!ba;s/\n/, /g')
        elif [[ -n "$(PATH="/usr/sbin:$PATH" type -p glxinfo)" && -z "${gpu}" ]]; then
            gpu_info=$($(PATH="/usr/sbin:$PATH" type -p glxinfo | cut -f1) 2>/dev/null)
            gpu=$(grep "OpenGL renderer string" <<< "${gpu_info}" | cut -d ':' -f2 | sed -n -e '1h;2,$H;${g;s/\n/, /g' -e 'p' -e '}')
            gpu="${gpu:1}"
            gpu_info=$(grep "OpenGL vendor string" <<< "${gpu_info}")

which is logically incorrect since having NVIDIA does not preclude having other, better GPUs.

[KittyKatt]

The logic there is gross and absolutely needs revisiting, agreed. I'll try to see what I can do with this.