Many users of the Snapcrafters’ Sublime Merge snap will be familiar with the smerge command. smerge is the standard name for the command-line tool as documented in the official documentation for Sublime Merge here. The various distribution packages already install this alias by default.
Since smerge is the official name for the command-line tool, it makes sense to add the alias for Sublime Merge. Adding the alias manually makes the snap inconvenient, especially when I am so used to using the smerge command out-of-the-box.
There is an open issue for this on the snap project for Sublime Merge, though I can’t link to it since I can only include two links.