No, you probably haven't read the conversation piece. The post is ultimately about switching providers because Google's service crosses a line from (1) targeted advertising to (2) using personal and confidential information for model training.
A service to clean up the UI does nothing to solve the issue at hand.
The dealbreaker was data usage for AI training, not UI:
"We are going to use your email to train our LLMs. I'm not okay with that... my confidential commercial information is NOT okay to use to train your models [...] So... goodbye Gmail."
latchkey|1 month ago
The complaint was about the summary, which Mimestream doesn't include.
aesh2Xa1|1 month ago
"We are going to use your email to train our LLMs. I'm not okay with that... my confidential commercial information is NOT okay to use to train your models [...] So... goodbye Gmail."
The title is Bye Bye Gmail.