This is unironically true. There's nothing wrong with wanting to use different tools which are better suited for the task. There's nothing wrong with trying to convince people "this tool isn't right for the job, let's switch". But after all that, if the decision is to stick with COBOL (whatever the reason may be) - a good professional does the best they can with it. If you can't suck it up and write stuff in COBOL, you aren't a very good developer.