Namaskaram Subbu-ji,
Are the punishment-injunctions in these smritis regarded within the tradition as 1. arthavada (not literal but meant primarily to emphasize the seriousness of eligibility and ineligibility rules), or 2. rules that applied in a different yuga (and believed to have been carried out legitimately by the kshatriyas of those times) and do not apply in kali yuga, or 3. rules that apply across yugas (including ours) though not practical any longer? (For the case of 3, one can cite (so I read) how Brahmins after Madhwa did not literally kill animals in their 'animal' sacrifices; so there was a universal shift in practice of religion though technically they would hold that the animal-sacrifice is dharmic if done correctly.)
The only similar incident that often is cited is Rama killing Shambuka, which some traditionalists say exemplifies kshatriya dharma against Shambuka whose tapas was motivated by adharmic intent and consequence
http://madhwaprameyamahodadhi.blogspot.com/2019/05/shambuka-episode-facts-of-valmiki.html, others say the dharmic intent of Rama's action was in order to keep varna-order in society (this is aligned to the literal thrust of these passages), others like Gandhi say is an interpolation added to the Ramayana (hence serving purpose similar to arthavada), and others (who again take the literal meaning) cite as example of how evil Hinduism is etc.
Outside of this episode, I do not know of other such examples in the scriptural records; nor of other records of Hindu kingdoms where such punishment is meted out based on a fundamental interpretation of such shastras. We do not seem to have legitimate pramana that establishes that this punishment was a part of Hindu society.
Since you are quoting these "controversial" passages, it is important to provide further clarification regarding how the tradition or sampradaya or acharyas understand them and how not to understand them.
thollmelukaalkizhu