Are you serious? He said it publicly, in unambiguous terms that he rarely uses. Even if it was somehow beyond your abilities to read into how they've handled Garoppolo over the last four years--which it shouldn't be, but that probably is way more than can be asked of you in particular--he explicitly said it. And people who have worked closely with him confirmed it for good measure, if for some reason that all wasn't enough.
Anyway, I'm done with this discussion. Honestly I'm starting to feel kinda bad kicking you around like this. Your own argument has thoroughly collapsed on itself as you keep contradicting your own points. You somehow think it's ridiculous to claim that the 49ers are a playoff-caliber team because playoff-caliber team means you must be good, and simultaneously you're discrediting the playoff team they're currently destroying because apparently playoff teams aren't good after all.
You could drive a truck through the holes in your logic on this one, but you might not be able to drive a short bus through it so I can see how you'd be having trouble getting there.