Use normal reads (memcpy() or direct pointer access) when you just need to read data from program flash.
Use Mem_43_INFLS_Read() when:
Your project uses AUTOSAR MemIf / NvM / Fee
You need MemIf‑style asynchronous jobs and callbacks
You require AUTOSAR‑compliant memory access
If you are not using MemIf/NvM/Fee, then Mem_43_INFLS_Read() adds unnecessary overhead — normal reads are simpler and faster.