Translation specifically was pretty bad before Google applied machine learning methods to it around 2007 when it became very good almost overnight.
Where it excels is quantity. Often, niche languages are only available on Google Translate.
It is especially baffling because Google has much better data sets and much more compute than their competitors.
Unless it is nVidia's CEO, who wants to sell specific hardware, they mostly care about the buzz of the term, not a specific technology, though.
They just existed before the GenAI craze and no one cared because AI wasn't a buzzword at the time. Google Translate absolutely was based on ML before OpenAI made it a big deal to have things "based on AI".
But just putting stuff in your browser that hooks into third-party services that use ML isn't enough anymore. It has to be front and center otherwise, you're losing the interest of... well, someone. I'm not sure who at this point. I don't care, personally.
But that’s not what the CEO of mozilla means when he says he will turn Firefox into an AI browser.
It means there will be stupid fucking LLMs shoved in your face.