If you decided to pay attention, both, propaganda and marketing obviously imply your own research to obtain information and everything you need to check it. This information could have nothing in common with the thing you paid attention to. It is not about true or false, it is about information. F.e. from some MSM propaganda article about climate change you hardly could get any information about climate change, but you could get information about connection between celebrity and some shady fund, or about new surveillance system to control you.

If you decided to pay attention, both, propaganda and marketing obviously imply your own research to obtain information and everything you need to check it. This information could have nothing in common with the thing you paid attention to.