Being in alpha and having breaking changes is fine, the question is how many. My impression is that Immich seems to introduce breaking changes far more frequently than what people might be used to from other projects.
And that does go back to professionalism: The better you plan ahead, the fewer breaking changes you have to impose on your users.
Nothing, this is not about that.
This change gives you the guarantee that
.internal
domains will never be registered officially, so you can use them without the risk of your stuff breaking should ICANN ever decide to make whatever TLD you're using an official TLD.That scenario has happened in the past, for example for users of FR!TZBox routers which use
fritz.box
..box
became available for purchase and someone boughtfritz.box
, which broke browser UIs. This could've even been used maliciously, but thankfully it wasn't.