The article says to me that the team/company had no initial actual need to use TypeScript as seems author doesn't get a point of its purpose (of course code wri

The article says to me that the team/company had no initial actual need to use TypeScript as seems author doesn't get a point of its purpose (of course code writing will be slower on the initial stage as it's not just about writing the code, but also about defining its structure which gives you the benefits with the growth of the project) and so a bad decision was initially made. In my opinion Vue is ok for the one kind of projects, with smaller team, smaller project lifetime and Angular is ok for other types of projects. React is alien here, ie not really needed.