The GI on the Wikipedia page looks straight out of some 2010s urban fashion lookbook with these glasses.

That's how fashion works. If someone is indifferent about what you wear today then expect them to be indifferent about it in 5-10 years too. But if someone makes fun of it today expect it to be fashionable within 10 years.

I hate owning too many socks so I would wear "long" socks with everything, including shorts. I would also tuck my trousers into my socks when cycling. This was considered a massive faux pas 10 years ago. Guess what the youth do today? Yep, long socks are in!

The 60s-era designs don't look all that different from some of the fairly popular current Warby Parker designs.

I bought a pair of glasses last week that look exactly like the 60's photo, but with a brown frame. Wasn't familiar with GI Glasses before, I just think that design looks cool.

Except 4x thicker

No, looks to be almost the exact dimensions of the MS9. Would definitely be indiscernible in feel too.