As others said, I'm not sure it's quite unsophisticated but you're not too far off. It's a specific jargon that comes from people I might perhaps consider unsop

As others said, I'm not sure it's quite unsophisticated but you're not too far off. It's a specific jargon that comes from people I might perhaps consider unsophisticated if I'm in a bad mood, but more likely they're just happy to be politically correct in a fairly harmless manner. I feel like it's used because "lessons" may imply judgment to some people?