I don't think there's anything unorthodox there. The idea of courtyards having to be rectangles is completely arbitrary made-up "rule". It's a lazy way of drawing, really.
In physical reality, there is nothing rectangular around the components. Placement accuracy (risk of components touching each other during P&P) counts from the real, physical edges of the part, not imaginary rectangle around it. During placement, component is rotated to the final rotation high up in the air, and pressed to the board vertically.
Component height must be taken into account; you can't place a small component right next to a very tall component because the P&P nozzle is small only at the tip and widens higher up. But this has nothing to do with the courtyard shape, you need to make the exact same considerations with rectangular courtyards.
In other words, I do that all the time with absolutely no issues. For significantly non-rectangular components, I draw courtyards that follow the shapes, because that allows me more flexibility during layout. One can always place components more loosely when possible, but don't limit yourself arbitrarily right from the start.