This is not meant to be a finished draft plan, but just ideas on which we can then continue to work. So the fine work is still to come, maybe I didn’t express myself well here
No one wants to criticize you, but rather to illustrate, based on knowledge or experience, how terrible the (non)performance here is, even after another attempt. Apart from the fact that this will slightly increase the costs you’ve thrown out the window, the added value of the current state is zero.
The clarity of the identical statements here gives you insight into the "performance."
An architect must, besides his actual work, also be able to provide you as clients with something you can use to imagine and design your future home. How should you correct anything when there is absolutely nothing to see except a half-baked Tetris?
I really understand that such a parting is unpleasant, but in view of the challenges still ahead in building the house, I would urgently advise you to do so again, since the man obviously cannot do better and surely knows that himself!
I see no glimmer of hope anywhere that would make me stay with this man; rather, I see and hear all the alarm lights and bells when I look at the further course and the eventual outcome.
Offering to guide you once again as a clearly improved measure is nothing other than a disrespectful slap that you should not accept. Your next, real architect would be able to tell you that as well.