what is your opinion about the American H-1B visa controversy?

Elon Musk, who advises president-elect Donald Trump, recently claimed on twitter (also called X) that engineers from the United States aren't good enough to work in tech, and that they should all be replaced with foreign workers on H-1B visas. H-1B visas are how American companies hire immigrants with special skills for skilled labor. Companies hiring immigrants, give them H-1Bs along with sponsorship allowing them to stay. If they leave the company, they lose the H-1B and sponsorship, and must return to their home country. People are saying this also allows companies to exploit foreign workers by threating them with deportation. On reddit, there are claims that: a. Elon's statement was false, and that there are tons of unemployed skilled workers from the recent massive layoffs, and that this is mostly to hire cheap foreign labor. b. Most of the workers hired since the layoffs are Indians with H-1B visas. c. Americans working in tech for already low wages are also being replaced by Indians, due to racist recruiters and staffing companies from India. d. This is bad for everyone, because the immigrants are being forced to work long hours for low pay, while Americans are losing thier jobs. What is your opinion?