For years I used some sort of line as a reference but when GTS came out I finally gave it up because I felt it became a massive crutch. It was so hard to adjust without it but I’m glad I did.
Once you REALLY know the track it’s a distraction and you don’t need it imo, but for me REALLY knowing a track takes a loooong time...That means knowing every little hump for turning in, initial brake bite point etc.
Like within a sec of top ten.
I just think many players trying to get better who are not already expert should use it because it’s so much better.
If a guy I know can hit 60k plus dr race top splits regular can use tcs then it pokes a hole in the bs turn all aids off position imo.
These tracks are tricky, the subtle cambers are everything, the line puts you in the right areas.
I think negative terms like crutch are often used when aids are discussed like tcs3 for example.
I’m regularly close to top ten on wheel with tcs and line, aids just work.
I’m good on Autopolis for example and by the time I got top ten there in Red Bull jr BECAUSE I used the line for so long I KNEW where the grip was.
So just FYI a lot of my (maybe they come off badly or know it all) comments are directed towards less than expert drivers, to try to give them ideas on how to get more enjoyment...

Cheers sir.
Edit plus if a person is learning wheel use on racecars the line will develop the progressive steering use needed for best results.
The formula in any racecar is default everything for setup, brake at cones. Turn wheel in come off brake make apex accel out.
It’s always the same thing. The more you do that if you really trust what I am saying you will learn to drive faster if you are still learning.
If you are learning on wheel and you don’t use aids you’re just gonna be ingraining mistakes and bad habits imo.
I’m only trying to help those who are not experts as I said.
Sawing at the wheel and stabbing throttle and brakes and all that trying to go fast sliding crap imo will only bring a person frustration.
Rant over.

:::steps off soapbox:::