Apple cofounder Steve Wozniak says a software’s user interface is “the most important thing”—and on that metric, Tesla fails miserably. An early Tesla adopter, Wozniak has since soured on the carmaker and CEO Elon Musk after a number of software changes he says destroyed the driving experience.

The entrepreneur also accused Musk's Tesla of shoddy design and minced no words in trouncing President Donald Trump.

It’s not good for a business to run that way,” Wozniak said of recent DOGE mass firings. Add Steve Wozniak to the growing number of business leaders who are questioning the approach of Elon Musk and DOGE to reduce government spending.

Steve Wozniak, perhaps the last of an old guard of tech guys who generally seem pretty chill, does not think particularly highly of Elon Musk or Donald Trump. The guy credited with sparking the personal computer revolution told CNBC during an interview that Musk and Trump are bullies who are taking a sledgehammer to the federal government.

The tech pioneer warns that skills for business success don't translate to effective governance — a direct challenge to Elon Musk's new government role.

Apple co-founder slammed the Department of Government Efficiency, or DOGE, over mass job cuts at various government agencies.