As others have mentioned, it was rampant in the 80s. Fake tweeters in boomboxes, rack system speakers with non-removable grilles and 3 chrome rings shining behind the cloth to make you think it's a 3-way, and it's just a 5" full range in the bottom ring and nothing in the top two. Or a 12" chrome ring around a 6" woofer.
When I worked at the electronics recycler, I saw a bit of modern deception. It was a panasonic home theater subwoofer. It looked like an active 10" (or thereabouts) driver. It even moved when there was bass. But when you removed it, it was just a 10" cone and surround hovering over a 6" (or thereabouts) woofer. Wonder why they didn't just manufacture a 10" woofer using the 6" motor assembly and just make a bigger basket. You think that would have been cheaper and certainly less douchie.