Do 'electronic' things generally work the same as the earlier 'electric' or mechanical things?
In the case of transformer versus SMPS the answer is ""No they do NOT""
An SMPS can block or seriously affect the quality of radio comms to an adjacent receiver. As was found when a 230 volt 40 watt incandescent desk lamp had to be replaced. The replacement LED ( with SMPS driver ) adversly affected the walkie talkie that was used by the person sitting at the desk.