Actually I don't consider that substantive tbh. Have you ever been in a political party? The higher up the greasy pole people get (or want to get) the more time they spend bitching about their own people and in internecine warfare rather than looking outward. Labour are bad for it but I think it's a common trait across most parties. Imo the fact that McFadden is the SoS isn't material in that exchange, it's a senior member of the party from one wing bitching about his lot with his mentor (who happens to have been discredited as someone almost or as treacherous towards the country as Farage). It's a useful line for the press to pick up on though.
As for the question of the bloated state the data says that irrespective of party the UK state has run pretty consistently at about 40% of GDP since the 1950s. The only substantive increase in percentage terms (by a couple of percentage points) has been during the Conservative government of the COVID and post covid era. Given what that government had to contend with I don't think that's a particular excessive increase and overall the data doesn't suggest that there's been a bloating of the state. Also the UK is pretty much in the middle of the pack for size of state in comparison to it's peers.
It obviously has a significantly larger state in percentage terms than the US and what has changed over the decades is the relentless narrative about our 'bloated' state driven mostly from actors on the other side of the Atlantic. Personally having spent a chunk of my working life there, I have no desire to live in a poundshop facsimile of the US.
Btw - I think the reason we've not been able to reclaim that couple of percentage points is because our economy has not been able to recover from COVID at the same rate as our peers and I think the reason for that is not the size of the state but the decades of under investment prior to the pandemic. The projection for the size of our state is to remain fairly stable with any midterm rises drive by age related social issues and our debt interest.
So how we stimulate the economy sufficiently is a source of contention but let's assume we can't or don't want to try and borrow our way out of it. Unfunded tax cuts will send the markets barmy so unless you want to completely overhaul pensions and old age provision then even savage cuts in other areas of expenditure is unlikely to raise enough revenue and that's before you consider the societal damage it might do. So tricky as it is I think we have to look at the people who are one of if not the biggest drag on the UK economy and that would be the portion of the super rich who simply extract wealth from the economy without investing in it.
Anyway that's for another thread and at least we are agreed that Farage is unfit for office, I think.