Is it true that contactless can lead to people scanning your card information?

I have a EE major and I do a lot of wireless hardware stuff. My understanding is that RFIC use similar technology for the link level part, but once you get the information, you need to really have the algorithm to understand the information.

Also, I think maybe there is a difference between mag card with RF and EMV card with RF? if you use a mag reader, maybe you can read the card information out and copy the card. With EMV, just like Apple Pay, each reading is only valid once. Similarly, EMV card when read by RF will generate a one time code to the RF reader, not using the card number itself, right?

So maybe we can assume mag with RF is dangerous, and EMV with RF is not?