A long, messy URL in a post does two bad things at once. It looks untrustworthy, and it tells you nothing about whether anyone clicked it. Shortening and tracking fixes both. A clean short link reads as intentional, and every click it gets is counted, so the vague question of what is working becomes a number you can actually see.
Shortening is the visible half. Instead of a sprawling link with tracking parameters trailing off the end, your post carries a tidy short URL that fits the message and does not scare people off. It is a small thing that changes how a post reads, and it takes no extra effort once it is built into the tool.
Tracking is the half that changes decisions. Every shortened link records its clicks, so you can see which posts drove traffic and which just filled the feed. The post you thought was your best might be quietly outperformed by one you almost did not publish, and without the numbers you would never know to make more of the second kind.
Optimizing follows naturally from seeing the data. When you know which links people click, you learn what your audience actually wants, not what you assumed they wanted. That feedback loop is how posting stops being guesswork and starts compounding, each round informed by the last.
Shorten the link, share it, and let the click data tell you what to do more of.