Latio red line is at 6500rpm.
For auto cars, it will auto shift to next gear even before it hits red line, unlike manual cars where you can deliberately rev till red line.
So it is perfectly safe to rev frequently. Your engine will not be damaged unless you do not go for recommended oil change.
But road safety should never be compromised.
Anyway, how often can you rev till 6000rpm? By 2nd gear, speed would have exceeded legal limit on highway.