I disabled the selection of various components in apps along the years when I simply find myself accidentally selecting things in regular use that break things or creat selection states that are hard to exit. Most recently it was in a modal-heavy media gallery SPA. If you click and drag outside of a modal when you mean to click, it highlights a grid of media elements that’s hard to exit and really makes for a wonky experience. Like all UX work, you don’t notice it when it’s done well.