You see a lot of power lifters say things like "don't deadlift unless you are just trying to get good at deadlifting". Risk vs reward there. Now imagine your average Joe at home moving heavy stuff at home with absolutely no idea how to brace his core, have horrible mechanics and just overall be a lot weaker than he wants to admit.
On the brightside it's very fixable and why the no pain from surgery actually was a big deal. Lindstrom will be going through a lot of what you did I imagine. Tons of core work, probably a lot of flexibility work, strengthening things like the spiral erectors with safer movements. I'm about 5 years removed from my injury and the only after effect I sometimes feel (rare) is a tightness in my lower back down to my left glute but it's pretty easy to loosen up and train/work without restriction.
This is why I've been much less worried than most. Add up the success rate for a lot of this, the fact he's a kid who will rebound easier than someone in his 40's and the fact he obviously has a strong work ethic... he'll be fine. He just might be a year behind making the NHL compared to what he could have been