Is Twitter Automation and follow/unfollow still safe?

Yes, I suggest you keep your settings to maximum 50-70 follows and unfollows per day. Start with 10-20 as daily limits, then increase it daily until it reaches 50-70 per day. Using low settings is necessary to avoid getting shadowbanned. There’s Twitter new shadowban which causes the target accounts to not receive notifications when you follow them. You can check out these threads regarding the new shadowban:

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