Some venture capitalists are growing less impressed with Sam Altman as he reportedly raises a $100 billion funding round for OpenAI, Business Insider’s Darius Rafieyan reports.

From hardball tactics when raising funds to relentless self-mythologizing about his role in the future of tech, Altman’s act is wearing thin on some.

It’s only natural for critics to emerge when a person reaches a certain level of fame. Altman has eclipsed that benchmark, going from a well-known name within tech circles to one of the industry’s key players.

Even still, he’s mostly avoided controversy except for his ouster-turned-return last fall and an ongoing feud with Elon Musk.

However, his wide-reaching ambitions — a sprawling network of investments focused on helping humanity — have some feeling they are more about self-promotion.

The Altman vibe shift is representative of the fine line founders often need to balance. Investors want to back visionaries whose charisma and determination for their ideas are undeterred, à la Steve Jobs.

But when unchecked, those sought-after executives can quickly spiral out of control and fall out of favor with those who initially backed them.