I have no idea why people should feel that campaigning to save the IMC will have any detrimental effect at all on a more readily achievable EASA compliant IR. There is a general consensus across EASA land that we should have one and all the indications are that the NPA when it comes out will propose one and AOPA is on record as supporting it.
Those who hold the UK rating are naturally concerned at potential loss of their hard-earned privileges.