It's not about "maybe its there and its irrelevant , let's forget about, small matter for now". It can become a very large and messy matter in no time. and permanent damage. 

Because it is similar to saying - 

" yes i'm mining bitcoin - that block with children getting raped" or

 "yes, i am using bitcoins as money - that same bitcoin which that has permanent pictures and videos of thousands of child porns  - kids that will be forever haunted"

Of course gov'ts will find a million reasons not to want bitcoin. Why hand them a free pass =)