Every service and site had their own malicious toolbar they'd ask you to install and / or* sneak it into the install for other software. They also came loaded with malware and or siphoned data from you. Older/more tech illiterate people would have browsers looking like the picture above and come to you wondering why their computer is so slow or why they keep getting viruses.
Plus the even simpler: apps are like browser “toolbars” because they’re just a veneer to collect more data, add more tracking, appear to be useful without actually benefitting the user over a simple web page
Then you could agree with any barely computer-savvy person that such things should be killed with fire.
Now a lot of very competent person will try to persuade you how you are a luddite and wrong, except 5-10 years ago they'd also promise some bright tech future in addition to that, and now you're just wrong because they can exist in that environment and like it, and you can't.
Can, but refuse. Big distinction for me. I've lived through these arguments once already, and have watched their computers keel over and die several time from the viruses these toolbars often bring, and I will now watch as their phones do the same.