Hey there I wondered the same thing! and I hope that this starts to be something that makes it into the system settings some day. The reason being: that once you have set it up, it is out of the way and you don't think about it ever again.
I have used a different option that is a more straight forward slider that you can drag and set the speed.
I used imwheel
and followed these instructions
sudo apt install imwheel
create the script file. I use a folder for scripts
mkdir ~/Utils where I created the file
touch mousewheel.sh and pasted the template (section 2) in
vim ~/Utils/mousewheel.sh then move to the script
make it executable
chmod +x mousewheel.sh
The scale is way too long, I use 5-7 depending on what I am doing.
add it to the startup apps there head to the
System Settings -> Applications -> Startup -> Add Startup App... (bottom left corner) and add it as a script, just
imwheel or in my case
imwheel -b "4 5" because the side buttons didn't work anymore and this fixes it
I hope this helps.