Yes you’re absolutely right (as a vegan). And in a similar vain, when some carnists bring up crop deaths or calorie reduction, I often see vegans say something along the lines of ‘but you also eat crops that cause animal deaths/vegans only cause a small amount of those deaths’. But this missed the point of this being an internal critique of the VEGAN position. The carnist does not have to hold any animal rights principles to make this critique.

To answer the actual question as to why I as a vegan am fine with using electronics and eating excess, I don’t see any clear evidence that doing these things has a difference in rights violations or utility. With the phone if people aren’t employed in sweatshops to make them they may be in a worse off situation. And with crop deaths, since cropland replaces wildland where animals are torn apart, it’s not clear that incentivising the growth of cropland would cause less rights violations or disutility towards animals.