2019 MBP Trackpad - Right Click and Palm Rejection

"What is the point of having an absurdly large trackpad, and only making use of less that 10% of it for a key function - bottom corner right click. "

That's not the point of the larger trackpad. It's for gestures and frankly I'd be okay with it being even larger. It makes gestures much easier and it's using the entire trackpad. Secondly you should use two finger tap for "right click". It's much easier. You don't need to use only a section of the trackpad. Two finger tap works anywhere on the trackpad. You'll need to configure it in System Preferences-Trackpad-Seconday click.

I've never once had an issue with palm rejection. Works 100% with the past 3 MacBook Pro's I've had.

"Palm Rejection is particularly horrible only for this bottom right corner click setting - which a lot of people prefer."

While I can understand your personal need for the right-click feature in the corner I have to say (and not trying to be mean) that you are very wrong. Even in the Windows world the majority of the laptops use two finger tap. They took the 2 finger scrolling idea from Macs. The majority just isn't right clicking over in the bottom corner.

Apple put it there for customers like you who want the old way of doing things but Apple does do a great deal of R&D user experience testing. To be honest you're the first person in many years I've heard that wants to old skool way of right clicking in the far corner. Time to make a change because the industry isn't going backwards.

Also the Palm Rejection feature is only for when you're typing and your palms touch the trackpad.