Possibly. That’s certainly true for most of such flats in London.
I’ll just quote these bits from the judgment:
He lives in the flat part of the time, having a home elsewhere as well. His son Alexander lived in the building for some period when working in London.
His wife finds the situation so intolerable she seldom stays in the flat.
[Alexander] lived in flat 1901 for some 9 months from September 2016.
She decided that her young children should not visit there any more, and so she herself hardly ever goes there. The older children are advised to keep the blinds down when the gallery is open. She is so upset by the attention that she has only been in the flat 5 or 6 times since the gallery opened, but friends of hers had the same experience when they stayed there.
Of the five claimants, three do not live there and spend hardly any time there.