You point is right, but the example is not correct. All languages such as C/C++ are reliable, and way more efficient with ressources. The environment to make simple software such as we browser or text editor are incredibly big. Firefox on a random front page took 300M ram. Same web browser and text editors used to run on 64Mb ram. Same need, a lot more efficiency

However, in tech we are used to be blind to the work needed to carry one one technology. Banks have dedicated firms to keep COBOL running and update it with everything that was missing back in time. Techbros make shit, true. But there is no magical technologies, only workers