I have a gwatch 4 and the hardware is fine. The flaw is Google's half-assed android fork WearOS, and then the layer of Samsung software that somehow makes it worse.
You could have infinite memory and processor in there and it wouldn't solve the jank.
You know those "X is now older than Y was when X came out"?
Like, in this case: "Pearl Jam Ten is now older than The White Album was when Pearl Jam Ten came out"
That happened in 2014.