Having to use magically-blessed (what you call "official") binaries is not a viable strategy either.
And obviously you can also link statically against musl on glibc systems. It's just another library.
And even your linked binary will probably work in 10 years, these libraries are not likely to break. See for example https://superuser.com/questions/1450027/how-exactly-a-system...
I couldn't say the same thing about the LaTeX binaries:
$ ldd /usr/bin/pdflatex
linux-vdso.so.1 (0x00007ffe347f7000)
libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007e699d5bf000)
libz.so.1 => /usr/lib/x86_64-linux-gnu/libz.so.1 (0x00007e699d5a3000)
libkpathsea.so.6 => /usr/lib/x86_64-linux-gnu/libkpathsea.so.6 (0x00007e699d587000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007e699ce00000)
libm.so.6 => /usr/lib/x86_64-linux-gnu/libm.so.6 (0x00007e699d4a0000)
libgcc_s.so.1 => /usr/lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007e699d47e000)
libc.so.6 => /usr/lib/x86_64-linux-gnu/libc.so.6 (0x00007e699ca00000)
/lib64/ld-linux-x86-64.so.2 (0x00007e699d624000)
libpng, libz, libkpathsea, libstdc++ are much more likely to break than glibc. $ ldd /usr/bin/lualatex
linux-vdso.so.1 (0x00007ffe4f8d6000)
libtexlua53.so.5 => /usr/lib/x86_64-linux-gnu/libtexlua53.so.5 (0x00007eccb87c1000)
libzzip-0.so.13 => /usr/lib/x86_64-linux-gnu/libzzip-0.so.13 (0x00007eccb9392000)
libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007eccb8786000)
libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007eccb86b7000)
libz.so.1 => /usr/lib/x86_64-linux-gnu/libz.so.1 (0x00007eccb9376000)
libkpathsea.so.6 => /usr/lib/x86_64-linux-gnu/libkpathsea.so.6 (0x00007eccb8699000)
libm.so.6 => /usr/lib/x86_64-linux-gnu/libm.so.6 (0x00007eccb85b2000)
libgcc_s.so.1 => /usr/lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007eccb8592000)
libc.so.6 => /usr/lib/x86_64-linux-gnu/libc.so.6 (0x00007eccb8200000)
libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007eccb8458000)
libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007eccb8138000)
libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007eccb842f000)
/lib64/ld-linux-x86-64.so.2 (0x00007eccb93c5000)
libpcre.so.3 => /usr/lib/x86_64-linux-gnu/libpcre.so.3 (0x00007eccb80c2000)
libbrotlidec.so.1 => /usr/lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007eccb80b4000)
libbrotlicommon.so.1 => /usr/lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007eccb8091000)
no commentPS: you could edit your previous comment and/or apologize for accusing me twice of forgery.