Well said LoganThe differences (as far as I know) are (very) minor corrections. The same happened to the KJV (corrections over time, alterations in spelling). I would think there are far more and substantial differences in various KJV texts (some of which also have had the Apocrypha, including the original edition), but I don't expect anyone to stipulate which version of the KJV they prefer, nor do I think it is a bad thing that there have been so many variants (with margin notes, without etc).
I don't think it would be a good idea to have a translation and then freeze it in perpetuity, regardless of corrections that should be made. Now if the ESV is sneakily migrating toward a bad translation through these various changes, that's reason for concern. If it is correcting based on more studies made in translation or for clarification or to remove awkward wording, that's a good thing. Some of the Puritans likewise wanted to revise the KJV and make it even better.