NOT MY OPINION, READ THE WHOLE POST, THE LAST PARARAPH IS KINDA IMPORTANT
Sorry but your portrayal of why people in europe are frustrated or afraid of the current situation is completely wrong, it's so far off that it's almost funny. I'll try to keep this short and try to remain unbiased.
People are not frustrated or fed up with refugees because they don't want to drink beer or eat pork, there have been several cases of rape, attacks, sexual assault, etc. perpetrated by refugees. There have been fights among different groups/ethnicities within refugee camps, all of this contributes to an overall picture that obviously doesn't sit well with the public. Furthermore there have been cases where specific help groups (refugees welcome and I think a group within the green party in germany) actively tried to hide crimes committed by refugees, to sweep these things under the rug as to not "damage their image".
This, combined with the fact that some people try to portray anyone who is even remotely criticizing refugees as Nazis, has made the general public pretty damn angry. I think the situation in germany is different, but hearing the normal working class austrian (and also quite a few of the volunteer helpers) on the streets seems to paint a pretty clear picture. People are fed up with this.
A few other problems include the fact that actually most modern Austrians are not religious. They were probably baptised and they celebrate christmas, but nobody visits churches anymore, nobody actually cares about religion. For all intents and purposes, these people are non-religious and fairly modern. And then you confront them with groups of people that are portrayed as deeply religious, people that act based on faith and not based on logic or the rules we have set in society.
I could go on for a long time, language barriers, the ongoing economical crisis, lies by the governments, unemployment, people from other countries that aren't even at war coming as "refugees", terrorism, you name it. Serious issues that are, in the eyes of the public, all somewhat related to this topic.
To wrap this up, this is the feeling and overall tension you can grasp right now where I live (which is vienna, the biggest city in austria). This is what I can gather from the general public, from everyday people I meet regularly, and how I see their reactions. This is why, in my eyes, people are fed up and think these things, this is what most people would bring up as arguments or reasons why they thing the way they do. Etc. None of this is my opinion, and I'm absolutely serious about that. My view on the matter is more complex and would never fit in a few small paragraphs.