I agree: the date is critical.
Which is why I change tires every three years whether there is tread or not.
As a gearhead, I know tires. There has never been a tire ever put on my vehicle that I did not personally inspect, check the manufacture date, and determine the speed, load, wear, traction and heat designations matched the intended task.
THOSE are the most important choices. Where they were manufactured and by whom are of lesser importance.
The world has changed. 15-20 years ago I would never have considered a Chinese motorcycle, electronic device or tire. Now they are among rational choices for consumers.
The meme "Chinese tires are dangerous and will blow up" is completely inop in today's world economy.
That said, interesting how when inspecting the tires the owner of the shop, a well-respected, long-term establishment for a couple of decades, would roll out a tire and point out the manufacture date, all within the last 6 months. Seems he's trained his staff to point this out, a positive credibility-building effort.