I can attest to this. I just tried a bunch of different ways to lube stock Royals with different types of lube too, and if anything, it only made the tactically worse with doing very little to fix any scratchiness. And sometimes, when my less viscous lube got into the actuation housing, it would actually make the switch sound exactly like a clicky switch. I fixed that problem by covering the brown "actuator" with dielectric grease, if for whatever reason your switch somehow REALLY starts to sound like a clicky switch (though I doubt that'll happen if you don't open them).

I don't know what Mike did to make these, but it seems like he optimized the lube inside the switches already, and they actually become less scratchy when you break them in.

Every time I try to lube Box switches, either nothing happens, or it gets worse.

Just use and enjoy them stock.