In As a queen, what must I do to take the son of my husband's dynasty out of succession line? the OP inquires on how to eliminate one specific son from succession.
In How do I prevent my imbecile son from being an heir? the OP also requests to know how to eliminate one specific son from succession.
Can I disown my heir? asks the very same thing
While it's true that they involve slightly different motives, they can be summed up to "How can I prevent one of my sons from inheriting?"
If the question was about any character other than a son, it would have a different scenario (and as such answers), but since all of them share the same answer, they would be considered duplicates.(?)
However, those answers are all on 40+,30+, and 15+ upvotes. What exactly should we do about it?