it irritates people.
Neither of the threads you link to are related to human rights matters. Worrying about causing offence to Muslims isn't a human rights thing, it's a racial equality issue.
Putting out signs about wet floors is a health and safety issue - nothing to do with human rights.
Ensuring that all people are afforded their basic human rights is incredibly important. The European Convention on Human Rights was drafted just after the second world war, and Britain was one of the first countries to sign up to it. In fact we were heavily involved in drafting it.
Our current Human Rights act came into force in 1998, and was really drafted in order to reinforce the provisions of the European Convention - obviously circumstances are different now, compared to fifty years ago.
Some of the rights contained in the European Convention are very powerful - the right to life, the right to liberty and security, the right to a fair trial, the right to freedom of thought, conscience and religion. All of these are extremely important, and it's not possible to run a truly civilised society without them.