>Is the only reason for this to make it possible for web developers or people who know TypeScript to write code for IoT Devices? To fill the lack of experienced low level programmers?

Which is funny because there's no lack of low level programmers in my experience.

Companies just try and pay Embedded Systems Engineers and Electrical Engineers dirt compared to "Software Engineers". In the same part of NY where SWE base salaries are $160k+, they will offer $120k for the same years of experience to a EE/Embedded SWE. And these are both major companies (non-big tech) and small companies that will do this.

Of course I also see those job postings for those specific companies last a long time here. There's one going for 3 years now for a many decades old small defense contractor that's even had their CTO directly reach out to me. Meanwhile I sit pretty in my actually respectable paying embedded job that I ain't jumping ship for a paycut.