Totally disagree. Here you have an example of one of the best laps made by going off the track in the Rindt corner.
Not only you can gain in this corner but you actually gain a lot in the next corner. Let me drive this way and Ill be faster few teenths of a second. I wouldnt care if it had happened unintensionally, but it was unfortunetely...... many times.
It depends by how much you go off the track. If you stay on the solid red kerb, it will slow you but if you go as you are in this image, then you will benefit. But not always.
The kerb unsettles the car too much when you turn in so you have to be two wheels inside the white line by the time you turn in anyway. The advantage comes from carrying more speed from the previous corner but to be honest it's marginal, very marginal.
You can gain more time by taking a later apex in the penultimate corner and shooting down to Rindt with more speed. The key to the final corner isn't a wide entry, it's making perfect use of the inside kerb there to rotate the car enough that you don't use any of the outside kerb [as that kerb slows you down too].
Since AC definitely has a programmed "slow down" in the kerbs, the majority of circuits bear no advantage at ALL to use or abuse them surely it would be against the spirit of the rules to further penalize drivers guilty of going outside the white lines?
Since the rules are only in place to stop people from gaining advantages from going outside the white lines to find the time and forcing everybody to cut to keep up, but since no real advantage is gained you'd be penalizing someone on the principle of the rule, rather than penalizing someone with the spirit the rules were designed for.
For example the originality of the regulation is concerning potential time gained.
You wouldn't penalize someone for outbraking themself in T1 every lap would you? Technically that would be a breach of the rules, but you acknowledge they are obviously only losing time by doing so, so you wouldn't penalize them for that nobody would. Everyone knows the kerbs are so draggy, so nobody will be actively going wide to search for time much like nobody would consistently outbrake themselves.
In AC running the kerbs hard is the same. You get no traction or stability.You only lose time. Guarenteed there will be certain situations where you gain like wise, there are situations where deliberately outbraking or taking an escape road will benefit you, but the reality is ON THE WHOLE, it won't.