I have no information on how accurate Carol's claims are, and for the moment, until proved otherwise, I am prepared to take them at face value. But it isn't the whole picture by a long way.
Why does she think that the Tories have been in government for so long ?
It would be great to have a party who prioritised the citizen above the economy, since both are important and that is meant to be the difference between left and right. However that is not the image we have of the Labour party.
If it stuck to ensuring the weak & vulnerable had access to the help they need then they should win most GEs by a landslide. But for some time now the public have seen support for excessive actions, pushing and support for foolish fads (just see the discussions over much of the woke stuff these days) and a tendency not to support the proletariat as such, but monitor them, control them, manipulate them into things no sane person would agree to.
Not as bad as some other parties of course, (the Liberals are even more contemptible), but still too bad for voters to want to put them in power.
Just look at the reaction to the referendum, which, since this is supposed to be a democracy, should have been legally binding, and was morally binding. Support for the people's decision seemed to be coming far less from Labour than from the Conservatives; although Labour tried to sit on the fence (!!!!!!) while some other parties merely showed their utter contempt of the people blatantly.
It is this sort of guano that means any thinking person would plump for a less equitable party, even one who feathers their own nests, but who at least makes an attempt to do what is right for the nation.
Until Labour takes a good long look at where they stand at the moment and resolves to return to the principles upon which they were first founded, then the voters have only 2 choices. a) keep putting in the dodgy lot, or b) vote for 5 years of control & manipulation by a party apparently unable to know wgat they ought to be doing. And we know what the voters was thought the lesser of two evils for quite some time now.
Or, of course, a miracle might occur and everyone vote for a non-mainstream party who actually mirrors the view of the people instead of telling them what they're getting whether they like it or not.