I just noted a bug in installing akmod-nvidia from rpmfusion. I cannot report bugs there since my email address is on gmail and rpmfusion does not allow accounts with gmail addresses.
I installed a new clean version of F37 on a VM from the install iso. I then did a full update and a reboot. Following the reboot, to test the install of akmod-nvidia i did the normal dnf install akmod-nvidia
After the install completed I looked at the kernel command line in /etc/default/grub and saw this:
GRUB_CMDLINE_LINUX="rd.driver.blacklist=nouveau modprobe.blacklist=nouveau nvidia-drm.modeset=1 initcall_blacklist=simpledrm_platform_driver_init rd.lvm.lv=fedora_37/root rhgb quiet rd.driver.blacklist=nouveau modprobe.blacklist=nouveau nvidia-drm.modeset=1 initcall_blacklist=simpledrm_platform_driver_init"
Note that all the options for nouveau, nvidia, and simpledrm are duplicated. This was a single command line install of the nvidia drivers so it seems the install scripts in the rpm are writing the kernel parameters twice and not just once.
AFAIK it does not cause any harm but certainly is not needed and looks really odd with this happening on a new clean install.
Maybe someone who has access to rpmfusion can test and confirm my results then report the bug and it can be fixed.