>Only an updated model has grown, and even then it lags behind reality
That's an irrelevant type of growth though, what you really need is growth in relation to the bond. The model having a newer knowledge cutoff about the external world and knowing stuff about Angular v22 doesn't really matter.
In-context learning gets you most of the way there. But context length and ability to actually make effective use of that context seem to be the current main blockers (whether for "agentic coding" or for "healthy emotional bonding").