Yes, but if there are almost no syscalls, then strace is doing a lot less.
Profiling my trivial program with callgrind shows (unsurprisingly) that the majority of the time is in dynamic library relocation and whatever __GI__tunables_init does: https://i.imgur.com/Yligh7S.png
Plus, the article is in 2015, and the author did not mention the CPU and other configuration. So that also make things muddy.