I would much rather work on a modern car than a classic. In fact, my hobby is retrofitting modern components into classic cars, including ECUs. The concepts on this ballot are important because the manufacturers would like to completely lock us out of the ECU, THAT would be an issue. As is, as long as they ECU can be talked to, and we can have basic access to it, it's not particularly difficult to work on a modern car (and they self-diagnose far better than classics).
If you really need to control an engine and don't have access to the original ECU for some reason, replacing it with an aftermarket ECU is not difficult, it just requires (very basic) coding knowledge. The basic guts of an ICE haven't changed much, and even variable valve timing and direct injection are not particularly complex concepts to tune. The fact that the skill set to work on modern engines is different than classic engines doesn't mean that they are worse or harder to work on, it just means you need different skills. This is like people saying that computers suck to work on now that they aren't full of tubes, that's only true if you only know how to work on tubes.