Old Czech (Bohemian) or Moravian

[ololololo]

Is it reasonable to think that the scribes who created the Voynich Manuscript sometimes used the EVA "l" ( l ) to mean the "L" sound and sometimes to mean the "R" sound?

In English, for example, “u” usually represents two sounds.

However, what could be the reason for using a single symbol for L and R? How distinguishable are they? What was the motivation of the alphabet’s creator (did they want to make things more convenient, did they consider these two sounds to be the same, or something else)?