After the terrorist attack on Paris, in November of 2015, Joann Sfar requested that people stop hashtagging #PrayForParis. He emphasized that religion wasn't needed in Paris. People that tagged showed an alliance with Paris under siege reported U.S. News & World Report.
The cartoonist has the right to free speech; he can make that request.
But it is sad and a sign of the times, when disliking prayer is on the rise. According to People.com, Sfar included an anti-religious missive in the post. He draws for a French newspaper that previously mocked Christians and the birth of our Savior Jesus Christ, said usnews.com
Galatians 6:7 says: Do not be deceived: "God is not mocked, for whatever one sows, that will he also reap."
Those that mock God will reap the fruits of their mocking. Galatians warns against this result telling people not to be deceived. It's a warning that everyone should heed.