For goodness sake read the room, it's not about her as an individual buying a second home, which may or may not be her main residence, that has yet to be established. It's the ambiguity surrounding all of that and whether she has evaded the higher amount of Stamp Duty which she would be liable for, if in fact it is a 2nd home. As far as 2nd homes are concerned Labour are generally disapproving as they see themselves as the party of high ideals and on the side of the people who are struggling to secure even one home, with a tacit disapproval of those who want to acquire more than one or multiple properties to rent out, which isn't something unknown to Labour MPs, so maybe we expect something better from them.
Of course many of us appreciate that Angela Rayner had a very difficult start in life and has had a mountain to climb to get to where she has today. However, we don't live in India where if one is born into a lower caste system that's where they stay. Here in Britain, as difficult as it may be when the odds are stacked against someone from her background, it is conceivable as her ingenuity has proved, an individual can move out of that social bracket. Nevertheless as a Labour Government Minister she will not be perceived in a good light if she has done a deal which may be legal but not necessarily moral to pay a lesser amount of tax than she should be liable for, especially as her government is looking at every which way to raise them in way that will cripple both individuals and businesses. To me it's all about the optics and not about "people like her shouldn't have more than one home". Using wealth protection firms for tax avoidance, and I'm sure supporters for the opposition will baulk at this, but if we didn't know the person in question was AR, we could be maybe forgiven for thinking they were an ardent Tory capitalist, but she isn't! Thus far the Labour party's association with the freebies, the dodgy landlords, one with multiple mouldy properties, one a former Homelessness Minister, the free designer clothes, specs, concert/sporting event tickets etc. I'm not seeing a lot of difference between them and the last lot.