Google has long been profitable, and Gemini is legit. Perhaps they're not included in the assertion as their computational clusters are monetized in other services as well?
In my comment I was really just referring to OpenAI, Anthropic and other companies where AI is the primary business. Google is a bit different cause they have a massive profitable business outside of AI.
Sure, a Nest thermostat doesn't allow you to converse with a large language model but it's still advertised as with AI.
I think the difference is really Google had an existing business that they can augment with new technologies while a lot of these other companies are a solution in search of a product.
I'm responding to the assertion that Gemini is legit. Being useful and being so indispensable that people are willing to spend 10-20% of their income on it (directly or indirectly) are entirely different things, and stock market valuations & investment levels roughly assume the latter will occur.