That entirely depends on how “popular” is defined. If you mean “preferred choice for greenfield consumer and B2B apps”, then yes, C/C++ would be ranked way lower. But as far as I understand this statistic is based in search results, so it takes into account the huge body of existing software that needs maintenance (after all, you need to stay up-to-date and also look things up again from time to time), as well as domains in which C and C++ are a good still dominating, such as programming embedded devices.