I am a very skinny/lanky dude, and I've even snapped the back legs off of several of these chairs over the years just from leaning/rocking back and forth on them.
Transcendent wisdom? Usually I'm just spacing out, saying "uh huh, wow," and nodding my head while my cousin rambles on about whatever antivax conspiracies she's been sucked into lately.
It's just a generic outdoor chair as common as a red Solo cup. The kind of chair many people have found themselves sitting in late into the evening shooting the shit, drinking, etc.
It's one of those things that make me say "OK my parents MAY have a few of those in their garden. Gotta see them to be sure, maybe. But it was a thing in that ill defined era maybe, so, you know, maybe."