Yes, that's correct. And yes you can delete the file you made and update initramfs again if it doesn't achieve any meaningful results.Is this the correct way to blacklist this driver? (I've blacklisted stuff before.)
1) Create a file in /usr/lib/modprobe.d named "blacklist-nvidia-nouveau.conf".
2) Then add the following contents inside this file:
blacklist nouveau
options nouveau modeset=0
Then go to the terminal to update the kernel with the following command:
sudo update-initramfs -u
And you're probably like me and just using a text editor to create that file instead of using a terminal like they tell you to. That's fine, I think it's better to do things in a way that makes easy sense and displays visual results.