Personally I am not at all concerned when my data is used for marketing. Instead, I like learning about products tailor-made for me. By privacy I understand not sharing data with the public or with the oppressive regimes when it may lead to harassment, firing or arrests of people. But using my data to sell me some watches or bike parts? I'm in.
I've had to use safari on Mac. Sites are constantly trying to auto download dmg files (executables on mac) of malware. The most common ad is saying your mac is broken and needs to download an antivirus (that's fake and trying to get you to download a virus). Top google results for "download vlc" or equivalent search is pointing to fake websites distributing malware.
All of this is the result of ads, analytics and mac detection.
I've tried to setup ublock origin on safari but apple blocked safari extensions and doesn't allow to replace safari fully with another browser.