The following/followers ratio is an important metric of your account health.
The closer to 0, the better. Let's suppose you are following 100 accounts and you have 200 followers, this ratio is:
100 / 200 = 0,5
Twitter restricts accounts with a larger following/followers ratio.
That's why our platform takes care of the unfollow actions of the accounts previously followed to keep your account healthy and not raise Twitter's attention.