I agree Greta.
We had something similar up here during the Scottish independence referendum. Those of us who voted no (for a myriad of reasons) were accused of being scared - that independence represented "hope over fear", as if being scared of what something so light on detail and so significant was going to mean for our jobs, our pensions, our travel, our ability to move freely between countries, for our children to access education, for health services, our legislative process, our access to food and so on and on and on.
If questionning all that, not believing the empty promises made by politicians then yep - I was scared then and I'm scared now because I don't believe there is nearly enough detail to know what we're getting ourselves into. I have far too much to lose if (or rather, when) it goes pear-shaped.