Generally speaking the more important an issue is, the less it is allowed to be affected by democratic processes. That's why Brexit was such a big upset, it bucked the trend (the management miscalculated, nobody expected the result and would not have put it to referendum otherwise).
This is conspiracism-adjacent, IMO. Plenty of consequential decisions have been put to referendums, if only because the political class may not want to take responsibility for them. And the outcome of a referendum is never certain. The more interesting difference is surely in how the elite responds to unexpected referendum results. Plenty of mainland Europeans assumed that Brexit would somehow be canceled (which was…
I'm genuinely curious what you would offer as an alternative? Democracy should ignore the majority if it disagrees with the controlling cabal who hold the correct opinions?