From my understanding, Law Enforcement already has the legal authority to give similar orders to bystanders (within reason). The purpose of this bill is to intimidate and punish people recording law enforcement misconduct and to crackdown on protests.

https://www.local3news.com/local-news/tennessee-bill-could-criminalize-approaching-within-25-feet-of-police/article_dbaa921b-b3f6-4375-9e40-3449e6fca94c.html