Nonsense. If people want to believe in deities appearing to an illiterate desert warlord and disclosing the one true faith to him, and paradise, and djinns, and winged horses ascending into heaven, well fair enough. It's on a similar level of objective implausibility as the virgin birth, the Assumption, Joseph Smith's golden book of Mormon (now conveniently lost), Hindu reincarnation, the tenets of ancient sun worshipping civilization and those Pacific Islanders who thought Britain's Prince Philip was a God. (BTW what do they make of his recent death, I wonder?)
Religious beliefs, as such, are relatively harmless and are essentially a private matter. Problem is when religions start dictating to everyone else how society should be organised and what you are allowed do, say and even believe. At various times in history, different religions have topped the oppression charts. A few centuries ago it was Christianity and the Inquisition. Things have moved on however!
It's equivalent today is political Islam. Death penalty for homosexuals and apostates. Severe penalties for blasphemers. Intolerance of or outlawing public profession of other religions. Savage oppression of women including the imposition of severe restrictions on their choice of dress. The hijab is emblematic of this oppression - imposed by force of law in many Islamic societies, and by force of patriarchal coercion and societal expectations elsewhere. Why RTE would want to "normalise" this, yet alone celebrate it as some sort of free choice is absolutely beyond me.
It is equally beyond me why many on the left who regard themselves as "progressive" and who get stuck into Catholicism at the slightest opportunity, will totally ignore the far more oppressive nature of political Islam.