Geirknappen theory about Danish language

Danish, Swedish and Norwegian are similar languages. For a Norwegian person, Danish writing language is easier to read than Swedish, but it is easier to understand what a swede is saying. Danes can be very difficult to understand if they talk fast. We use all the consonants (B, C, D, F, G, H, J, K, L, M, N, P, Q, R, S, T, V...) while the Danes tend to use mainly the consonant D and G. The English word "cake", is "kake" in Norwegian, "kage" in Danish, and "tårta" in Swedish, but the Danes pronounce "kage" almost like "gaegaee", and that is difficult to understand.

My theory is that Danish and Norwegian language were more similar hundreds of years ago, but then there was a severe disease that gave the Danes swollen throats, and when they tried to say and teach their children to say "kake" it just became "gaegaee". Because the disease lasted for generations, all Danes believed that "gaegaee" is the way the word is supposed to be pronounced.

Danish language was easier to understand for Norwegians in the 1920s. My theory is also that Danish language will develop to consist of only vowels: "Cake" will become "ae-aee". Maybe that will happen in 2120, if Denmark has not sunk in the sea because of global warming.