I also have some of the scripts I used to unfollow about 1000 friends at once if anyone doesn't believe me about the timelocks
I just unfollowed may be 10 of my friends and I noticed no "timelocks". A scripted mass "unfollow" might be something the site notices but is normal user behavior penalized?
At the end of the day unfollowing simplifies your timeline which lowers your engagement. The same applies to unfriending but I didn't mention that.