Not 100% illegal. The dog's breakfast that is the current legislation has yet to be tested in the courts. The regulators have made interpretation so difficult that those responsible for enforcement cannot do their job as so much is open to different interpretations of the present legislation. Until such time as it has been tested by the UK courts, there will be continuing arguments on this and other forums.
It is not up to you to attempt to tell others to what they should and should not respond, we are all adults here and entitled to ask anything we like within reason. If you don't like it, fair enough, just don't attempt to shut down a harmless discourse, we do not need your censorship here.