“Not all of them are equally “easy”, but I found reading the list really fun and it gave me some ideas for things to learn.”
Cross-compiling, running code in the kernel and recognizing images all used to take a specialist. Now they’re a flag, eBPF and an API call. Read the list again and notice how many of the “easy” items are a hosted service with a monthly bill. Easy often means someone else owns the hard part.