For some people, it has the (temporary) opposite effect: the words sound extremely similar and become confused.
Like if the words "escalator" or "elevator" were foreign to you, keeping them straight in your head when initially learning them could get pretty frustrating.
This effect is even mentioned on the "Twenty rules of formulating knowledge", written by a guy who programmed an SRS program by himself:>Combat interference>When you learn about similar things you often confuse them. For example, you may have problems distinguishing between the meanings of the words historic and historical... If knowledge of one item makes it harder to remember another item, we have a case of memory interference. You can often remember an item for years with straight excellent grades until ... you memorize another item that makes it nearly impossible to remember either!> In simple terms: you will get confused about what is what.>Interference is probably the single greatest cause of forgetting in collections of an experienced user of SuperMemo (the SRS said author wrote). You can never be sure when it strikes, and the only hermetic procedure against it is to detect and eliminate. In other words, in many cases it may be impossible to predict interference at the moment of formulating knowledge.https://www.supermemo.com/en/articles/20rules
All that trouble for the sake of not "wasting time" on learning some radicals.