I used to get emails from a particular recruiter which would include a link to a job listing on their employer's website. I'd always remove some extraneous tracking information from it, landing on a single identifier which I believe was unique to me but still showed the job listing.

I believe the job-listing identifier was always unique because I eventually got an email from this recruiter which instead contained a bit.ly link, presumably because it rendered me unable to remove the tracking information. I did not click on that link. That was also the last email I received from that person, cementing the idea in my mind that he was "on to me" affecting their recruitment analytics.

Sometimes I think back on that time and smile, knowing that I caused some difficulty -- however small -- for someone working in business intelligence with my dumb anti-tracking antics. Admittedly, they did successfully track some of my behavior but they had to do it manually with a human thinking critically so I'll call it a win.

Anyway, the point of the story is that I didn't click the URL-shortened link because they're shady AF and often used for the specific purpose of hiding details about the URL. Tracking is a rather benign "abuse" of this but there are other practical concerns with malicious domains.