I really mean that. Abuse of layakari is also a killer, with very few exceptions. Alla Rakha used rhythm in such a sublime and beautiful way, he's on a different level. Otherwise people often try to mask empty bols by constantly changing the chhand and the gun. This is extremely boring to me.
Most people can learn to play e.g. jhaptal theka over tintal theka with a little practice.
Such devices have their place, when used sparingly and in good taste. This is a matter of judgment I guess. But for instance, if after two minutes of the solo I heard someone playing jhaptal theka against tintal theka, I would be very skeptical. If after many long pieces of a serious nature have been played I here such a device, it doesn't concern me, especially where it leads to an extended development in that chhand such as one might find in Banaras playing. Because of my Lucknow training I concentrate very heavily on the bol.