Do you deny that people care about this conflict more than any other in the world, by far? Because that's backed up by numbers. You need not look farther than this thread and the many others posted in the last couple of weeks.
Now if you say that it doesn't matter that it gets more attention than anything else then I will respectfully disagree. If, for example, the population and media in a certain country focuses specifically on crimes perpetrated by immigrants, then it definitely does matter even if the crimes by the immigrants are all true. It is an expression of an anti-immigrant sentiment. This is simply undeniable.
It also matters for two other reasons:
1. It diverts international attention and resources from other crisis zones. More people have died in Syria and Iraq (each of them, not combined) in the same time period. People were decapitated by ISIS. Christians are being ethnically cleansed from countries that they have inhabited for millennia. Libya has ceased to exist as a sovereign nation. No one protested, no one reported, no one cared. This matters.
2. The fact that everyone has a strong opinion and this much emotional involvement for both sides, has in my opinion distanced the solution, not made it closer. France, Turkey, Qatar, Egypt, the United States, Iran, the European Union, the UN - everyone constantly takes part in this conflict. Without this kind of irrational attachment, Israel could not have justified and sustained controlling the West Bank. Similarly, Hamas could not have used dead civilians to rack up points in world opinion of it weren't for the fact that people around the world constantly absolve it from any responsibility and accountability towards the people of Gaza and their welfare.
So yes, it is completely relevant and it matters a lot. People die because people obsess about this conflict and become so bound to one side that they cannot even rationally examine any contrary opinion or point of view. An Arab killed by a Jew or vice versa makes people angrier than a thousand people killed brutally in other places. This begs an explanation, period.
So how much funding has Syria or ISIS received from my government?
Look, I am not saying anything about what conflict people care about more or how many people care about it. I don't trust your assertion that there's reliable numbers to back it up, though I would say that it's really not my place to tell most of the world what to care about even if it is true, but I also don't see it as relevant. I care about what I care about for reasons that are personal to me. I care about Syria and ISIS and Ukraine and Boko Haram, but my ability to do anything about those is more limited and when I see traction being made on an issue I care about I'm happy to get behind it and push for whatever my miniscule part of humanity is worth. I am not the Prime Minister or President of any country, nor am I a particularly charismatic person on the grand scale, so this is what I can do for what it's worth.
But it's really not up to you to decide that people care about something too much or too little, and arguing about it does nothing but diminish this conflict. If there was a magic cause that would solve all the world's problems all at once you can bet your ass I'd be behind it. As is, there's only so much time and energy in a day or a week or a month or a year.