This is the same company that wasn't aware that LD_PRELOAD has been in use since the 90's in their last post. Here is that unique method of hijacking execution flow using /etc/ld.so.preload, 20 years ago: https://seclists.org/incidents/2002/Jan/86. None of this is unique or novel, including replacing the loader. LD_PRELOAD rootkits have severe drawbacks (which are not an issue for eBPF rootkits).