The author, a long-time user of Photoshop, has uninstalled the software due to increasing frustration with its performance, quality issues, and the Creative Cloud app. They had been using Photoshop since the mid-90s and had subscribed to the Creative Cloud version in 2013, but over time, the software had become slow, buggy, and difficult to use. The author has switched to Pixelmator Pro, which they find to be a massive improvement in terms of software quality. They also mention that they are happy to be rid of the Creative Cloud app, which they felt was installing files all over their computer.