While it is true most oils labled “vegetable oil” either are just soybean oil or contain a mix of soybean oil and/or corn oil and or canola oil.
But people who cook a lot at home can chose canola oil and olive oil and avoid the less healthy “vegetable oil”.
The caveat is when it comes to eating out and store bought foods, you can’t be sure which “vegetable” oil is used/included.
However, the level of soybean oil fed to the rats may have been extreme and not analogous to what most people consume in any manner.
Canola oil is Rapeseed oil. It has been around for thousands of years, and was considered unfit for human consumption until the 1950s. People used it in lamps and such.
They didn’t like the name and changed it. Canadian Oil Low-Acid. “Can-o-LA”.