Popped in the Eagles thread and a few are saying Young is overrated. Lol.
Per
Next Gen Stats:
Young has generated a career-high 17.2% pressure rate this season. The 49ers now have two of the top five defenders in QB pressures this season:

Nick Bosa: 41 (4th)

Young: 40 (5th)
I think it's a little bit of both. Is he having a solid to good season this year? Sure, his next gen stats and 5 sacks show this.
Is he living up to the billing of being the #2 overall pick, for his career so far? I would say definitely not. It's usually a tell-tale sign when a team doesn't pick up the 5th year option on a player. Even more so when they were taken #2 overall.
It's honestly a little bit of both. But like I said in initially, it's a good move for you guys and an upgrade a position of need.
FTR, Young did kinda get the best of our LT Mailata for the 1st matchup, but this past matchup, that just happened on Sunday he had 0 pressures, 0 sacks, 0 hurries, 1 tackle.
Mailata is the #1 rated offensive lineman in football.
We will get to see what that matchup looks like and how it plays out in a few weeks. Should be fun!