TTS has existed for decades, machine learning for less than 20 years, genAI as we know it for less than 5.

Those 3 things are not the same thing. Yes the genAI they used can be included as a TTS because it is one. But only in function.

You are playing on words here. Most people know TTS as a crappy old thing, here this is something way more advanced.

Even if it was the same thing to begin with. I wouldn’t be like a company using a simple TTS capable of recreating the voice of a voice actor I like without paying them the same as if the company hired them.