Every case of running from the cops could be considered "entrapment" in the narrow sense that the person could not have fled from the police without being chased by them. As such, I do not find it sufficient inducement to support any such claim.
That said, I would certainly acquit anyone whose only crime was fleeing or "resisting" arrest--with no actual underlying crime, I would be highly suspicious of any account given. I am sympathetic to the idea that those are BS charges often added as padding. If there is no evidence of injury to one of the cops, I would consider any charge of "resisting" arrest to be likely BS.
But that's why I support the people who did the right thing and dropped the charges. Cops are not inherently different from anyone else: they make mistakes just like we all do. The big problem is that their screwups cost people more.
I do honestly appreciate your point of view though: the mental contortions you are able to go through are quite impressive!
The reasoning behind that is to reduce the risk of death or serious injury. In spite of the fright, you will note that nobody got injured in this case, frightening as it may have been.
What is your solution, exactly?
But hey, they are just doing their job right? If something bad happens, they as fully sentient beings can't be held responsible for their own actions, because job.