I’ve been using the offline version of Options+ that somebody recommended me a while back, it removes AI and auto updating and has done the job for me.

It’s kind of hidden on their website but you can grab it here:

https://hub.sync.logitech.com/options/post/logi-options-offl...

That said I think this will be my last Logitech device. They’re just not very durable products and die too quickly

Thanks for pointing this out. I had no idea it existed. The other options in the comments just didn't quite work the way I would like.

- The main topic requires me to pull python dependencies, build, run manually on Mac - All others can't reassign the button below the scroll wheel on the MX Master 3/4

I switched to the offline version right after Logitech forcefully and without my permission downloaded and installed bunch of crap software on my Mac. I was furious that a stupid mouse driver app has the right to install a random crapware. I’m still fuming about it when I remember it.