Funny that isn't it, all these legalities saying you can't do this, but can do that, etc... It's ridiculous...
Don't know how old you are but businesses use to do “cut and shuts” back in my day. Sadly too many of these bodgy repaired cars would split in half in an accident... It’s good such rubbish practices were stopped.
And dog **** dumb wannabe boy racers did stupidly dangerous mods on their road cars. They thought they knew what what they were doing but they didn’t. And they raced them on public streets. Wasn’t uncommon for things to snap and for them and their mates to get squashed when they went sideways into a pole.
They were fun times due to lax enforcement (compared to today) but they were also dangerous times... but we were too young to know better...
ABS, ESC, EBD, TC, airbags and lots of policing made a huge difference to the road toll. So it ain’t bad for those of us that just want to get safely to wherever they are going... a good thing in fact...
Legislation tried to ensure people couldn’t fiddle with and turn off the safety systems in the cars. However, manufacturers gained an exemption for “performance” cars so owners could turn off TC when at the track... but such stuff will be short lived as EU is pushing for vehicles that will not allow a driver to exceed the speed limit and it won’t be switchable. There are lots of such plans...
These days we are exposed to more (CoV2 pun intended) and as such have more knowledge. But the knowledge bar has been raised with the complex systems we have in our cars. It ain’t just spanner twirling these days. We can still have our fun via modding but it has been heavily curtailed unless we have deep pockets for engineering. Reality is that it isn’t a bad thing when rules are sensible but they aren’t always sensible
But the masses don’t care
In any case, it’s highly likely driverless cars will also put an end to our motor cars/toys. Hopefully we get keep out race tracks so we can load our toys onto a self driving trailer and get to the track for some playtime... sadly I think track land costs would be such that they’d go the way of the dodo and have small crappy multi level appartments taking up the space
Until then, you just need to know the rules and make up your own mind how much you feel you can bend them
just remember to also assess your risk regarding the liability issues with illegally modified cars, should you be in a smash
So annoying, not really... frustrating having to work within the boundaries, maybe...