Most proposals they object to are trying to solve real problems. I almost never see the EFF propose better ways to solve those problems. They just raise objections to everyone else's proposed solutions.
And those objections are often just low effort implausible slippery slope arguments. It is pretty easy to make a slippery slope argument for pretty much anything that has it leading to a dystopian nightmare.
Legislators and policy makers tend to pay more attention to people with solutions, even bad solutions, than to people who just object to everything, especially when those objections are low quality.