this is what wildlife protection is all about意思

This is what wildlife protection is all about.=This is the thing (that wildlife protectiion is all abou定语从句）
这就是野生动物保护有关的所有内容..这么说可以吗？this is that all about wildlife protection. all about的意思不是 关于...的一切？应该接在修饰词或词组的前面吗？更多见的是: That's all about wildlife protection好吧，接在is 后面应该是表语从句吧！是滴！精确讲师表语从句。干嘛用what引导，而不是that ?
wildlife protection is all about这个表达式真不习惯，干嘛这样写呢