It depends on your definition of religion. I consider religion to be the ideology and practices that are derived from superstitious beliefs. So a quick test for whether something is religious or not: does the person doing or thinking the thing believe an intelligent conscious supernatural agent is directly involved? If you're an atheist you're not religious, you don't do anything religious, you don't think religious thoughts, you don't have religious beliefs. So if you're coming from the starting point that all religious beliefs are obviously nonsense then you're not really religious.Alain de Botton: Atheism 2.0 (TEDTalk)
And all the things Alain de Botton talks about are present in non-religious communities, and none of the people arguing that religion is untrue that I can see have been arguing against them because of their use within religion. Who actually says that because they don't believe they can't have community, or they're cut off from morality?
Modern art isn't exactly popular among secular people, people don't get their culture from modern art galleries, and popular forms of art aren't dissimilar to religious inspired art. Poets and cinematographers are isolated individuals but then so were prophets and theologians.
I can't stand the rhetorical style of "black" American pentecostal preachers. They remind me of the type of socialists and communists I can't stand, e.g. George Galloway. I'd argue those styles aren't educational, persuasive, or particularly popular. It's not like religion doesn't have examples of poor public speakers and that secular society doesn't have examples of good ones.
People will create rituals if there are none, the problem isn't lack of using ritual, it's getting people to care about something in the first place. Secular people do try to assign days with people(that represent ideals) and causes(that are motivated by ideals). If something is important you will come across it, people resent repetition, they want novel experiences.
Alain de Botton refers to Richard Dawkins but then uses two examples of things Dawkins says he enjoys, Christmas carols and church architecture.