My backyard ends at a salt water tidal stream. In 30 years it hasn’t changed an inch. Well, when the tide’s up it’s higher, when there’s heavy rain or a hurricane it changes but other than that it goes right back to it’s normal ebb and flow...
There’s islands in the Pacific that were suppose to be the first one’s to go under - like 2 inches above sea level... We’ve heard about those islands for decades - they were suppose to be under water twenty years ago - they’re still 2 inches above sea level.
I don’t know what to say...
As others have noted, it can be really difficult to isolate sea level going up or down from local land going up or down.