Pretty much agree that the declarations have been misinterpreted and pointed against what was the original intent. I personally cannot see any ties to a possible downfall on BTC. Euro and Pound will have their ups and downs, commerce will likely suffer a fair share, passport controls may become a pain, legal aliens there and abroad may have a change in status, and so forth, but Bitcoin does not for part of the outcome.

Note: There’s an issue with the link you provided (it bears an extra set of https:// and the quotation marks in the URL can be dropped). Additionally, the Independent is pretty persistent with Ad blocker thingy. This site leads to a similar content (with no Ad blocker): https://en.ethereumworldnews.com/ceo-claims-no-deal-brexit-could-spark-unprecedented-bitcoin-breakout/