sure, maybe, but performance doesn’t matter for deciding if a language is memory-safe or not. And C++ isn’t memory-safe by any commonly used interpretation of that word.
You may of course decide that the downsides of memory-safety aren’t worth it for your use-case, that is a separate issue
Which language would you say is not memory safe then? Is there any serious language out there where you should expect memory issues if you don’t make any mistakes?