You're linking to posts from 15 and from 18 years ago. And the post from 2011 is about how Donald Knuth wrote TeX (not LaTeX) in the early 1980s. While TeX and LaTeX have fundamental design flaws, it is much less awful to use them these days, with a rich selection of rather robust packages available, that vastly reduce the need to go into hard-core LaTeX programming yourself.

I won't lie: It takes getting used to and you need to learn a lot if you want to achieve fancy complex typesetting effects. But - it's not half as inconvenient as it once was.