Removing the touchbar has a material financial impact to Apple? We're talking about a CNC machine here, that's how they carve out the aluminum chassis. It would literally involve them carving out less aluminum from the block, because the touchbar would no longer be needed.
Quality problems? You mean like the over-engineered keyboard they've had issues with for three years?
Some decades longer design patterns are battle tested/aren't broken, yet Apple continually tries to break them - thinness to the extent that they now solder memory/disk to the board, putting out a keyboard design that isn't sufficiently tested, and all sorts of Catalina issues that people have documented online.
Would it materially harm a company with a trillion dollar market cap to offer a version of this without the touchbar (thus yielding a lower price), so people can afford to upgrade the soldered memory and NVMe drive?
Would it also harm them to make a version that didn't have soldered memory/NVMe drive?
Ultimately, this is why I switched to a Dell Latitude. Being user hostile to basic memory/disk replacement doesn't fly with me when spending $1500+ on a machine.
And if replacing either breaks the crypto chain - I don't need a black box T2 chip, I'll do my own disk encryption.