Soda cans also have a counterintuitive efficiency feature: concave bottoms. If a can with a flat bottom held the same amount of soda, it would be shorter and have less surface area, but its metal body would need to be thicker to withstand the same pressure. In the end, it'd require more aluminum.
It's a combination of structural variation, like with the bricks, and branding. Because as long as it's "waving" it doesn't matter how exactly it waves except in some critical areas, like where you hold it, the bottom and the top.
Same with cans, corrugated sides, tops and bottoms are for strength and pressure resistance. Actually most corrugated anything is done so for strength.
The religious group that funds it has a questionable relationship to science including and despite "Science" being in its name. (It was started as a 19th Century anti-hospital group. We'd consider them "proto-anti-vax" in today's concerns and terminology.) They may be unbiased in reporting the news, generally, but there's still concerns about their relationship to reporting science given their name and the known beliefs of their church.
Sure, you can't fault them for not having some good reasons behind their beliefs, based on what they knew and experienced at the time. You can certainly fault them for calcifying those beliefs into an entire church with rituals/rites devoted to such beliefs that then became somewhat obstinate in the face of later scientific progress and technological advancement (and then because of that also complicit in later struggles of science versus pseudo-science and conspiratorial thinking).
Same principle as concave bottoms on wine bottles (though the concern there is more about jostling and impact during transport than pressurized contents).
https://www.csmonitor.com/Science/Science-Notebook/2015/0414...
^Probably not the best article for this, but it was easy to find and has a link to a chemical engineer's video.