Vocaloids are far from perfect, but they can be damn good in hands of a good producer. Plus, isn’t that the point OP makes? “AI VA were invented so soon all VAs will be AI”?

And to produce the example you provided, it required a big voice bank from people who are very experienced in voicework. Top Gear/The Grand Tour have over 200 episodes where the hosts have basically the same characters throughout the show spanning like 20 years. And it still ain’t perfect. It’s damn good, but there are hiccups here and there.

So to produce a good AI voiceover, you’ll need experienced people doing a lot of work. And to get experienced human actors you will need humans acting. Hence, my point