Alternative to 'princ' doesn't have to be 'print', it could be any of 'print-out' 'output' 'put' 'write' 'write-output', and that's just off the top of my head (yes, several of these can be ambiguous and might have different meanings, but still better than 'princ').

Just because CL has a long history, it doesn't mean that everything about it has to be correct. Otherwise why start a project of CL remodernization in the first place?