Yeah, I think the exact phrase is something like “it takes a politician to be that arrogant” I think it stems from:

“Politi­cians are like mon­keys in that ‘the higher they climb, the more revolt­ing are the parts they expose’.” (Gwilym Lloyd George)

But yes, the inherited wealthy (which includes politicians too) are the same. Nowhere more apparent than in the US.

But it never ceases to amaze and infuriate me, how arrogant politicians become, particularly to the very people that they’ll be meeting - cap in hand, begging for their vote with every excuse under the sun and telling them lies that they think they want to hear, just to get elected again, so that they can, once again berate those very people.