You can't statically link glibc and you shouldn't statically link openssl or libcrypto, and Linux distributions make it extremely difficult to do reliably without compiling everything from source.
You don't have to statically link everything. You should choose based on (a) if the lib has to be dynamic (eg. portability layers, crypto) (b) if the lib is widespread and has stable ABI.
and now your tarball will break on an indeterminate number of linux user machines without (often extensive) manual intervention to fix .so versioning issues. That's why things like flatpak exist.