There's not much you can fault Lagavulin. Except, maybe, you'd like a few more affordable releases if you're a fan? From that perspective, 2019 certainly delivered.
Lagavulin seems to do well at any age. There's the wonderful Lagavulin 8 Years Old as an example of what impact young distillate can have, but also many examples of well-aged Lagavulin that reach stratospheric heights.