An exaggerated issue and as we have seen eradication from the public forum is an ideological goal rather than anything that can be satisfied by anything short of total as you will find out once the House of Lords is consigned to the litter bin.
We're discussing religion, it has to be about ideologies, because there is nothing else. It's not like you can point to the evidence...
As things stand, we have an explicitly established sect of a one particular take on one particular group of religions, and whilst the (current) occupants of that sect might claim that their priveleged places in the Lords are to represent 'all religion', not only is there nothing compelling that, but that's also increasingly giving special voice to a diminishing overall group (the religious), even if you take them at their word. It still fails to address why 'religion' is special enough to warrant different treatment in parliament from every other concern, and even the 'it's important to a large number of people' argument is starting to fail.
What do you do about those who want a literal interpretation of freedom from religion?
Try to accommodate their desires as far as possible without unduly impinging on anyone else's freedoms, just like we strive to do with, for instance, people who want to discriminate in employment because their invisible friend doesn't like certain groups.
O.