One should be careful about extrapolating a trend from two disparate data points.
Trump and Brexit have one major thing in common: they relied on surprisingly high turnout from white working class men for ostensibly right wing causes after a lot of anti-Establishment and anti-immigrant rhetoric.
They have a lot not in common, like pro-Brexit voters very strongly disapproving of Trump, Brexit being a popular political cause for over twenty years backed by a vast majority of the mainstream press which actually picked up momentum because Establishment and liberal free trade figures came out in favour of it, the demographics for Brexit voters being heavily skewed towards older people[1] in a way that Trump votes almost certainly weren't, and Trump evidently picking up a lot of "the incumbent party haven't done anything for us; let's vote for change" votes that aren't really related to the appeal of his wall or birther remarks to ex-Obama voters living in Mexican-free areas of Michigan. Trump's "Make American Great" again spiel might well resonate more with an unemployed ex-factory worker than a broadsheet article extolling the virtues of comparative advantage, but it certainly isn't the sort of practical protectionist plan he needs to deliver a permanently change the status quo position on globalisation, and his new supporters aren't going to stick around if he doesn't deliver something.
It's also clear that other relatively recent major Anglosphere elections haven't been a major success for the radical right.
[1]that campaign certainly wasn't won on subreddits