Car shows- Something does not make sense

so how new is too new? i mean the challenger came out in what 08 or 09? the retro mustang that started it all was in 05. those cars are over 10 years old now. car shows in the day had cars newer then that at them.

the more modern muscle car owners still modify the hell out of them.. instead of chrome valve covers they are hydro dipped now. headers are still used, aftermarket rims and tires are still used. custom stripes are used. some have custom paint.. may not be that 70's style paint but its still custom.. ok you may not like the style but thats on you. they are out in force and modifying their cars just like the generation before only in the 2021 style and technology.