Yes, I suspect Bo Nix is better than his first game might show. Seattle has been good for a very long time and that's a tough place to be the visiting team. If the O-Line gels for DEN, Bo might get a chance to shine. But it ALWAYS starts with the line.I think Bo will be OK. The O-line isn't great yet, and his receivers are in the process of getting to game speed with him. I watched and he seems calm and as prepared as a rookie can be. He may have played 61 games (or whatever) in college, but that's not the pro game.
In today's NFL they don't have enough training camp time to learn much. The camps are so short and involve so little actual hitting that they're not much more than a series of walk-throughs. The first month of the actual season is now the training camp.
I have felt for years that putting a rookie QB onto the field in his first year after being drafted is a huge mistake. There's so much money involved that teams are desperate to show off their new toys, but QBs like Rodgers and Love in Green Bay show the benefits of sitting for at least a year before starting. I suspect many potentially QBs have been run out of the league by being started too soon. Even waiting half a season have value.
I think the last 9 years have been a series of DEN QBs who never got a fair shake because the O-Line was mediocre at best.