This isn't a random blog post and the techniques in the blog are actually used by the standard library and some pretty major C++ libraries such as range-v3 and

This isn't a random blog post and the techniques in the blog are actually used by the standard library and some pretty major C++ libraries such as range-v3 and fmtlib. The author of the blog post is in fact one of the authors of fmtlib. Getting libraries to play nicely with ADL is actually a huge pain in the ass and in fact the three major C++ compilers don't agree with one another on how to actually perform name lookup in a large number of cases.