A parliament that cannot initiate legislation and not even completely refuse legislation introduced to the session. Very weird.
In UK analogies it's more like the house of lords except it has less revision power on the legislation before it.
First: this is still direct influence by the people.
Second: UK parliament theoretically has this power, but in practice private members bills are either trivial, filibustered, or both ("nurses should have free parking at the hospitals they work in"). In practice this is up to the government, and given how much of the uk government is "convention" rather than constitution, it's almost impossible to untangle it without at least a politics degree.
Third: can you name literally even one other trade agreement that tries? If there is one, and there may be, I've not heard of it.
The fact is not everything was the EU's fault. There was a lot Westminster could have done to make things better. They choose not to and indeed actually gold plated many EU directives due to virtue signaling which made them much more difficult to follow.
The fact is politicians at all levels including EU take credit for things they didn't do and try to ignore the fallout from things they did.
All the while blaming the voters.
Mainly because changing public perception of policy choices takes time and effort and they have limited of both and tend to want to focus on things they actually care about.