[vanderZwan]

Did you check out the "about" section and the timeline of his career on the main page of the linked blog?

https://www.voxagon.se/

Because it looks like your opponent is a Swedish former demoscener who started programming at age 12 on the C64 and Amiga computers in 1990, quickly moving on to writing games and demos in assembly, then professionally developing physics engines since 2001, specializing in game performance profiling and squeezing performance out of optimized mobile games.

As far as game dev stereotypes go you basically picked a Final Boss fight. Good luck, you'll need it :p

[Aeolun]

It’s not that hard to do performance profiling even if it appears to be a lost art these days.

[vanderZwan]

I half-agree, but in general I'm always a bit weary of saying "x is easy" for anything programming, because it might appear easy in isolation, but often that depends on also having decent understanding of all interconnected parts of the computer, OS, and so on that relate to it.

And in turn each of those may also appear simple in isolation, but as a whole it can still be an overwhelming amount of knowledge to learn, integrate and connect the dots between (and then once you reach that level of mastery, there's meta-problem of applying outdated rules of thumb from a few decades ago to modern hardware). That's where the advantage of having the kind of lifelong experience like a former demoscener gamedev comes in.

Anyway, my earlier post might have been a bit tongue-in-cheek but I'm rooting for you to surpass this guy one day! :)