Hello and answer is out of the bat not everything, reference is more complete than that and offers many more avenues, within Python 3.8.5 for example Delimiters, Operators and Keywords are not objects. stackoverflow.com/a/66374328/11554034
Have explained it with some detail in that link feel free to check it along.
Anyway, next one says that statement you can correct it by saying (something more correct, although if still can be more completed feel free): "Everything in a logical line that is not NEWLINE, INDENT, DEDENT, Space bar Character, Operator, Keyword or Delimiter is an object in Python."
Cheers.