Sure but we saw similar tactics used in the last few general elections - this is the environment of politics these days.
There's no niceties left.
London & the South, surprisingly - well maybe the South isn't so surprising. Mostly business owners, bankers & lawyers
Most of their arguments are around the limiting factor of the EU, especially when it comes to funding, research, policy & other legislation.
To them, the EU is failing, from a legislative, financial and economical perspective.
I don't think we needed a referendum to fix these issues, it could've happened while we remained - just likely to be a slower burn. & the other side of the argument is that there's no guarantee a UK government would pander to these needs anyway when Brexit happens.
I work with corporations, investment funds, lawyers - as well as my own personal circle of small business owners & other law & finance professionals - and you'd think they are the ones that are freaking out the most - and so far it's not been the case. My workload has increased drastically drafting up new contracts but thats not too surprising.