This isn’t semantics. If you remove sugar you chemically alter the structure of the good. They will be tougher as a result.

The “quickbreads” you list are all batters. Try finding a dough based bread that becomes a muffin.

Again, I ask if you are vegan/plant based diet. Im not looking to engage with you on the morality. I have just noticed over the course if my time baking many vegans maintain their changes would make a similar product or an identical one when the science does not back that claim.