I mean you're sorta right but not quite. On paper, yes. But real world, no.
Fully yanking the EGR system out and not making a tune change will affect how the car runs negatively but it's stupid easy to trick. As long as the ECU thinks the EGR is doing something, it'll hum along just fine 99% of the time. The ECUs in these cars using technology from 85 that have been slightly updated are not sensitive enough generally to tell that it's not getting it's little puff of exhaust in the intake. A missing EGR valve with the ECU looking for it will cause some problems.
There's generally not much reason to delete it, unless you are running Fox headers that don't have the tube for it, or are worried about the looks, but I've ran a couple of cars with the smog pump completely removed, ports plugged on the back of the head. EGR blocked off on the intake with a 351W fuel pump delete plate and a penny in the exhaust to block it, and left the EGR valve plugged up and tucked behind the motor so the ECU thinks it's functioning and away we went.
There's a sticky at the top of the forum about doing EGR deletes with a lot of solid info in it.