You are a "follows the team" kind of guy. So am I. So whatever happens to Goff is more a curiosity than a care. He played well and progressed until he got the big bucks. Then it when POOF.
Yet others here get attached to players and follow them where ever they go. I certainly didn't root for Warner when he went to the Giants and then the Cards. On the other hand I didn't root against. I was ambivalent (even though I blame Martz for Warner leaving).
There's only 1 team in the NFL that I care about: the Rams. So whoever leaves is no longer a Ram and therefore no longer on my radar.
And the only other teams I even keep an eye on are the ones in direct competition with the Rams in the NFC West and overall NFC standings.