Hi Victordhende,
Thank you for reaching out Microsoft Community.
Are you having issues when playing a sound? If this is what it does on your Surface device while a Bluetooth speaker is connected, I would have to raise this concern of yours to Microsoft to check why under Advanced, Bluetooth Collaboration is unavailable. I also checked it on a Surface Book but I can't find that option. I also encourage you to let us know what's going on on your Surface device and the exact reason why there's a need for you to disable Bluetooth Collaboration.
Please don't hesitate to respond to this thread for details.
Kind Regards,
Crest_Z