On Tyler Smith, the focus of course is going to be on the 2 penalties because that fits the neat narrative about him right now, but I feel pretty good about what I saw.
The athleticism and movement ability for his size is obvious and all that's really missing is refined technique to unlock all of his natural ability. I guess there's a scenario where he never puts it all together and only ends up an average player but I don't think that's the most likely scenario.
From what I can tell his biggest issue aside from generally not playing with consistent technique is his desire to move guys against their will on every snap. He hasn't learned yet that he doesn't need to keep trying to bury guys every time, that sometimes just being in the way is enough to make a play successful.
He wants to drive opponents to the ground every chance he gets and sometimes that will draw flags in borderline situations, i.e. his first holding penalty.
All I know is, the guy has Pro Bowl talent and it's just a matter of getting him to play with better technique/awareness. There's no excuse to even consider starting McGovern (who got knocked around a good bit tonight) just because you're afraid of mental mistakes/penalties from Smith.
These coaches get paid millions to coach, so coach the guy with the sky high ceiling instead of starting a guy who doesn't have it.