It is generally recommended to opt for newer models that meet the latest emission standards for a variety of reasons, including environmental concerns and potential legal restrictions in some regions.
It is possible that the KTM Duke 390 BS3 may no longer be available or legal to purchase in some areas due to the implementation of newer emission standards.
I would strongly recommend consulting with a local KTM dealer or researching the regulations and availability of the Duke 390 BS3 model in your region to make an informed decision. They will have the most up-to-date information regarding the availability, legal requirements, and potential implications of purchasing an older model in 2022.