I'd agree with that proposition. The fallout for the EU is likely to be greater than anything that can happen to the UK.
And, if there is a total dissolution of the EU, who will benefit from the new economic and political alliances that must form?
There are analysis conducted by ECB, and many others estimates that all European economies will experience depression once European common market disintegrates somewhere between -10 to -25% depending on the country. UK was, is, and will be holding shorter end of the stick (smaller population, smaller economy, less technologically developed) than continental EU/Germany. Pound went down today 8% against $$$ and Soros estimates that it will go down by another 20%. 40 years of interconnected economic market will take a toll and market will bleed. People will lose jobs, companies will go under, and uncertainty will rock the financial markets for months or even years. You can look into USSR how it ended when common economic zone had disintegrated. And Russia had much more resources than present UK and at the end it meant absolutely nothing preventing full blown depression in 1990's.
And who is benefiting from it? Putin was very happy with the vote, so is GOP.