Unfortunately, nibble, judges, magistrates and, above all, juries have to 'square the circle' in decisions, all the time. Juries are dailly called upon to decide what dishonesty is, what is reasonable force in self- defence, what is a reasonable excuse or a reasonable belief, what words mean, what conduct is reckless, and what words are likely to cause a person hearing them to feel a particular way. All these are matters upon which people may disagree; all are open to interpretation.
It is striking that, in his long piece in The Times, the gist of which was repeated in other reports, Peter Tatchell expressed a concern which he did not bear out with any case where someone had been convicted. Now, if the words of the Act are such that people were convicted for saying things which he says can, and should, be said, it should be easy to find at least one case where that had happened in the 15 years that the Act has been in force and operating.He did not cite one.
On the other hand, he did cite several cases where that had not happened; one over 10 years ago where he was acquitted , the rest cases where the arrest or charges had not led to any proceedings at all, they were "dropped". So the complaint is not that the courts are applying the law, and its words, wrongly. In his trial, a court did so correctly and he was acquitted, in the remainder it was the arrest itself, or the threat of it,which was from a wrong understanding or application of the section and nothing further happened. At its highest, his complaint is that people are humiliated by the arrest and that erroneous arrest or the threat of that,may deter people from speaking.
That is not a reason to change a law which has worked for 15 years. If people were convicted for saying something which he thinks they should be allowed to say, it would be a different matter, but he has not cited any such case.