You are assuming that people are not capable of "parsing args and sending request to endpoints" in an efficient way, using a few lines in their main programming

You are assuming that people are not capable of "parsing args and sending request to endpoints" in an efficient way, using a few lines in their main programming language. This assumption is probably very offensive to any competent developer. Your are right, however, that a junior developer who is still getting up to speed with the main language of the team will be tempted to use whatever language / script that he already knows or encounters in a stack overflow answer.