My experience of TPMs in the industry is indeed unfortunately people who were not particularly good at sw dev, and who are not particularly good at project mana

My experience of TPMs in the industry is indeed unfortunately people who were not particularly good at sw dev, and who are not particularly good at project management, either. But they take care of all the charts and annoying stuff and technical managers and directors can hold their hand while they pretend to be know what they are doing by using jargon. OK, that was harsh. But not always far from the truth!