I genuinely don't see the issue with this pattern or rhythm. There's repeated use of 1/6 (might not be a lot but when it's in the song I have mapped it) its not difficult compared to other sections so its not a diff spike, and it follows the structure of the section. Dumbing it down with repeats wont fit the intensity and ignoring it would break consistency.
I personally believe that the simplicity of the current section is a nice addition to an otherwise pretty technical and advanced map. It's a nice break that fits the theme of the mapping and the sounds that are mapped (there's only two different synth noises, both represented by two difference shrooms). The spinner is also in my opinion the most fitting thing for the sound its covering, a slider wouldnt fit and as written earlier the entire idea of the section is it to break the nonsimple design of the rest of the map.
I genuinely don't see the issue with overmapping the triplets to full on streams while basing the spacing on the vocals. It's different enough to make the map stand out from the other ranked ones, and it's fitting enough that with solid hitsounding it feels natural.
The target audience of the map is clearly the ones that do enjoy high bpm high sr stream maps, so pointing out that the concept limits people who would enjoy the map is kind of weird? Some people enjoy streams, some don't. Saying it limits the amount of people who wanna play the map is debatable because where are the statistics to back that claim up?
Ultimately the addition of the streams is a concept Foxy has decided to go for, if you don't agree with it then that's generally fine (just as how me agreeing with it is fine too), it's also well executed in both mapping and hitsounding so I personally don't see how it's an issue to begin with.
That's at least just my personal opinion about the matter.