I think this charge would be much much much more accurately leveled at a large number of Christians. Creationists would be on that list but hardly alone and probably not the worst. There has been a lot evil done in the name of Christ. But the distortions to make Christianity opposed to science has definitely promoted atheism to a very significant degree. By comparison, Darwin not so much. One of the first people to read and congratulate Darwin on his work was a priest. And the fact remains that the majority of worldwide Christianity supports evolution. No it is hard headed and divisive Christians who are the real problem as they always have been, and yes atheists have been quick to seize the opportunities this has provided.
IN FACT, this was probably the biggest contributor to Darwin’s disaffection with Christianity…
On moving to Downe, Kent in 1842, Darwin supported the parish church’s work, and became a good friend of the Revd. John Innes who took over in 1846. Darwin contributed to the church, helped with parish assistance and proposed a benefit society which became the Down Friendly Society with Darwin as guardian and treasurer. His wife Emma Darwin became known throughout the parish for helping in the way a parson’s wife might be expected to, and as well as providing nursing care for her own family’s frequent illnesses she gave out bread tokens to the hungry and “small pensions for the old, dainties for the ailing, and medical comforts and simple medicine”.
Innes inherited his family home of Milton Brodie, in the Scottish Highlands near Forres. In 1862 he retired there and changed his name to Brodie Innes,[66] leaving the parish in the dubious hands of his curate, the Revd. Stevens, while still remaining the patron. The meagre “living” and lack of a vicarage made it hard to attract a priest of quality. Innes made Darwin treasurer of Downe village school and they continued to correspond, with Innes seeking help and advice on parish matters. The Revd. Stevens proved lax, and departed in 1867. His successors were worse, one absconding with the school’s funds and the church organ fund after Darwin mistakenly shared the treasurer’s duties with him: Brodie Innes offered to sell the advowson – the right to appoint the parish priest – to Darwin but Darwin declined. The next was rumoured to have disgraced himself by “walking with girls at night”. Darwin now became involved in helping Innes with detective work, subsequently advising him that the gossip that had reached Innes was not backed up by any reliable evidence.
A new reforming High Church vicar, the Revd. George Sketchley Ffinden, took over the parish in November 1871 and began imposing his ideas. Darwin had to write to Brodie Innes, explaining what had upset the parishioners. Ffinden now usurped control of the village school which had been run for years by a committee of Darwin, Lubbock and the incumbent priest, with a “conscience clause” which protected the children from Anglican indoctrination. Ffinden began lessons on the Thirty-nine Articles of the Anglican faith, an unwelcome move from the point of view of the Baptists who had a chapel in the village. Darwin withdrew from the committee and cut his annual donation to the church, but continued with the Friendly Society work.
For two years Emma organised a winter reading room in the local school for local labourers, who subscribed a penny a week to smoke and play games, with “Respectable newspapers & a few books … & a respectable housekeeper … there every evening to maintain decorum.” This was a common facility to save men from “resorting to the public house”. In 1873 the Revd. Ffinden opposed it, as “Coffee drinking, bagatelle & other games” had been allowed and “the effects of tobacco smoke & spitting” were seen when the children returned in the morning. Emma got Darwin to get the approval of the education inspectorate in London, and just before Christmas 1873 the Darwins and their neighbours the Lubbocks got the agreement of the school committee, offering to pay for any repairs needed “to afford every possible opportunity to the working class for self improvement & amusement”. A furious Ffinden huffed that it was “quite out of order” for the Darwins to have gone to the inspectorate behind his back. Darwin’s health suffered as he argued over natural selection with G. J. Mivart, and in the autumn of 1874 Darwin expressed his exasperation at Ffinden when putting in his resignation from the school committee due to ill health.
From Wikipedia on the reigious views of Charles Darwin.