Sorry but God will not allow himself to be mocked. He will absolutely punish people for cursing and desecrating his creation. If he didn't, he would be a wimp and not to be revered or respected because He could be walked all over and trampled on.
So you're saying either that God has no sense of humor, or that He has one, but only finds things funny if it's not about Him, making him relatable, but insecure.
In any event, He also seems to be mercurial. Notice how many sinners live lives of peace and pleasure, and how many worshipful souls find themselves beset with hardships. More curiously, notice how many sinners are faced with hardships and how many faithful live lives of happiness. And the people who are neither especially sinful nor especially devout seem to get both in the same proportion. To the casual observer armed solely with his eyes and the tools of statistical analysis, it seems one's religion and religiosity are minor factors in determining how happy you'll be.
The religious are, to be sure, happier than the non-religious (though whether the link is causal or correlational is debated), but the research suggests that it doesn't matter
what religion. Even non-theistic religions give the same effect. So if God is bestowing his grace, he is spilling it on everyone involved in any sort of religious service equally, including the Christians, Hindus, Shintoists, Buddhists, etc.
There's also that Pahnke "Good Friday" experiment...a researcher named Walter Pahnke conducted an experiment in which he chemically induced a religious experience in people. On a Good Friday, the subjects, theology students, came to meditate in a church for several hours. Each was given either a placebo or psilocybin. The ones who received the real drug reported intense religious experiences, of course. Their levels of happiness proved to be significantly greater than that of the control group, and the effects remained for more than six months after the experiment—the psilocybin group consistently reported that their attitudes were changed for the better (and happier) than did the placebo group.
So I am skeptical of the claim that God is making distinctions among the followers. It seems that even artificial religious experiences may explain the difference in levels of reported happiness or in punishments received. God, if He exists, is an equal opportunity smiter and bestower of gifts. Claiming otherwise reminds me of the religious uproar that Ben Franklin caused with the lightning rod. One school of thought condemned Franklin because God was revealed through lightning. The more dominant school of thought believed that lightning was the tool of the Devil (the "Prince of the Power of the Air"), to be chased away from homes by faith, not by scientific gadgetry.
Reverend Thomas Prince blamed Franklin's lightning rod for a 1755 earthquake that hit Boston (where, he figured, there were more of the devilish rods than anywhere else, so of course God's wrath was directed there). John Adams also spoke out against them on religious grounds, comparing them to the presumption of Peter trying to walk on water and decrying Franklin's impiously "attempting to control the artillery of heaven."
It is a strange God who is threatened by the private actions and statements of the men and women He created. Just as strange as One threatened by Franklin's iron rods.