Not suggesting that the work is not impressive, but the kids of today grew up in the era of computers and the Internet, and a lot of problems that were hard for you and me are no longer hard today.
I spent my teenage years learning and understanding sendmail milters. I got to a point where I could write them from scratch. Guess how useful this knowledge is today...
But today, the useful bit is the process you learned to obtain that level of mastery.
All my work arounds and tricks are completely useless today. There is some broader knowledge and problem-solving I learned I’m sure, but ultimately a lot of the tools I learned over the past 15 years are completely useless now and those youngsters are now overcoming their own obstacles!