This scares me to an extent but as long as immich provides some instructions on what to do to get back on track, this should be okay.
Also, what happens if one skips multiple such breaking updates? Will it be my responsibility to hunt down the changes and make corresponding amends?
And finally, while I understand that immich is not supposed to be photo backup solution, does it allow export and import of metadata, tags etc? I ask because I intend to set it up and I may skip few of these updates and instead do a fresh install a year or so later. If I can simply export my settings, face ID info, albums from old setup and import it into the new one then it makes things very easy.
Otherwise the phrase breaking changes does sound really scary.