For the purposes of this little web series, I think that Angelo is fine.
Again, the Swedish Chef has appeared in one episodes so far, and he could very well appear future episodes. (Regardless of whether the are in-the-can or not)
Let's be realistic here folks; The Muppets Studio OBVIOUSLY thought of the Swedish Chef when this Muppets kitchen idea came up. (Who wouldn't?)
But for whatever reason, it was deemed that a new chef character be created. This is not necessarily a miscalculation. They most likely have their reasons for making this decision, and the decision was probably not taken lightly.
The very fact that the Swedish Chef has appeared in one episode so far means that they still care about him.
Clearly Angelo will only appear in this web show, and it is likely that the Swedish Chef will appear again in the future, possibly in a bigger role.
Let's just hope for the best. I don't that kids are going to get confused.
Kids today still know who Big Bird is, and if kids today still know who Big Bird is (despite Elmo being a little ham and getting more screen time) then we don't need to worry about kids forgetting about the Swedish Chef or not knowing who he is.