Maybe. A few years back Gainedtinova/Bich did side-by-side triple lutz, and then it disappeared for a long time. Duhamel-Radford had them, then they retired and again no one else... now it is about three or four Russian junior pairs who are landing (more or less successfully) triple lutz or flip (or both), but I don’t think the whole pairs field is ready to start learning those jumps yet. Look how the ladies developed - it was triple axel very occasionally, always only one person (maybe two) in the world at any time. At that time having seven triples FS and being able to do triple-triple was enough to win, so there was no ‘need’ to have 3A or quads. They perhaps ‘wanted’ them, but they didn’t need them. Only when the rest of the field caught up, the majority ladies have triple-triple in the SP and seven triples in the FS, there is the pressure to do harder jumps to beat their competitors. So in pairs, my guess is, while skaters still can get the points by increasing their levels on other elements, they don’t need to risk harder jumps. When far too many pairs have the highest levels on their other elements, the only way to get the edge will be landing harder triples or doing quad throws or twist.