As an atheist, I have always thought my absence of faith was just that - a lack of belief, rather than an alternative belief.
I see nol 'riding tide' in the sense that atheists are desparate to convert others of faith to their view, certainly not in the way that most believers would love to convert any passing atheist who comes into their orbit.
To me, atheism is the absence of belief, and a contentment with that viewpoint - the urge to try and cause anyone to see the absnece of a God as i do has never even crossed my mind.
If the discussion ever arises, it is myself who is on the receiving end of the 'I've got something you need, so I am better off than you ...' rationale which believers love to extend - my reverse agument does not exist, i simply live and let live, and i have no interest or intention in trying to chnage another's viewpoint.
'Rising tide@? The use of that phrase is scaremongering, nothing more or less.
Certainly as far as the Christian church in the UK is concerned, they have no need to fear a 'rising tide' of anything - their backwards-looking ritualistic hypocracy is doing the job of killing belief without any help from anywhere else.