This is a direct quote from a presenter explaining how to advance your career at my employer to a room full of overworked people. This was presented as a positive thing, and you should be happy to receive this reward.
This is not how it should work. Do not put up with this mentality.
If you are doing more work, then you deserve more pay. Document what you do and make your case for more money or keep looking for a place that will compensate you properly.
To the managers that do this to their employees: “Fuck you. Pay us!”