>These new "designs" take so much space for nothing.

This should be the main complaint. They're comparing an entire email, including the From/To/Title with a social media comment. Why don't you show us how much of the email we can still read and edit with that stupid big "expressive" button?!

Even better, the original position of the send button is literally in the place where it shouldn't be, according to Android design guidelines throughout the years. Even Material2 doesn't put the _primary_ screen action on the top app bar, most chat apps (where you _send_ content) have the send button in a different place etc., so obviously the users would find the big-ass button faster if it takes away some 20% of the useful content

> for 5 seconds spent on finding the button the first time, one will use this same button thousands of time and know perfectly where it is.

Quite a lot of UX design these days is only made for initial interactivity smoothness without the realization that it really does matter how something feels the 1000th time you do it (especially with how often we use our phones now).

I guess Gemini will be writing emails going forward so no need to have a meaningful text input field.

Maybe the design needs to adjust with use. Imagine a person new to sending mail has a big and clear send button at the top, then, the UI learns over time how familiar the user is with the interface. If they seem capable of hitting the send button then it can be shrunk down a bit. Rinse and repeat until the button is down to power user size.

Equally, if the user has been away for a month or two, the send button can be made more prominent, to account for the user forgetting the interface.

This could be branded muscle memory, so the send button gets fat unless it is regularly used.