Sorry, that is far from a great summary. It quite obviously sets out to prove that there is nothing wrong. Evidence for this includes arrests have increased from 5k 12k a year but the number of convictions has gone down. That is far from reassuring. It seems to be claiming that all arrests fall into "bad" categories and have nothing to do with political thought. That is misrepresentation. Also narrowing of the argument in a attempt to refute the whole problem.

Here's one horrible example:

https://www.bbc.com/news/articles/c0j718we6njo

As an aside the police body cam footage one of the officers searching his house says "lots of Brexity books'

There are countless awful examples of arrests for online comments. Here's another:

https://www.bbc.com/news/uk-england-merseyside-43816921

She posted the lyrics of her dead friends favourite rap song, and was convicted. How this even resulted in an arrest never mind court and conviction is beyond me.