I never got the big concern over these cameras. The red light cameras and the mobile speed camera as much worse. You have to be going over 70 to get a ticket and most of the time the speed of traffic doesn't even allow you to surpass, and if you did in those conditions, you should probably get a ticket for being a danger on the road.
Someone else mentioned, but the real solution if you don't like it would be to get the speed limit increased, but I don't think that really helps anything with the limited distance on I-235, which is about 13 miles. The difference in time between driving 69 mph (the fastest you can go without a ticket) and 80 mph (the speed most people travel when a speed limit is set to 70+) is about a minute and a half over the whole distance of I-235 from east mixmaster to west mixmaster. Cut that in half for most people since they only go downtown, and that's about 45 seconds of time saved by going 80, which can easily be negated by just hitting lights wrong once you get off of the Interstate.