~~I have a 2013 MacBook running Ubuntu. I would recommend Kubuntu because idk which wifi chip your MacBook has but it probably won't play nice with Linux (which is apple drivers fault). And there is a great guide on how to fix it for Ubuntu
True, it's Broadcom's fault. From which ISO? I only have one Mac so I've only been able to install there. It worked out of the box but it always randomly froze after two hours of use until I found it was the Broadcom Wifi