If you want to race without specific rules and guidelines about specific items that outline the basic make-up of your car, they have a place for that. It's called bracket racing.

If you want to participate in a class with defined, specific rules, it's up to you to make your car fit the class. It's supposed to be harder, a challenge to test your skills and knowledge.
No one is saying it's supposed to be easy, and the rules will by nature, exclude a lot of people from participating. That's just how it is.
In the northeast, one of the classes with the highest car count at NHRA events is Stock eliminator. It's also one of the most restricted. If you want to play in that class, you can't just show up in some gutted, tubbed, lexan windowed bracket car and whine to the officials.
You have to build a car to fit the rules and restrictions.