I know that users aren't permitted to nominate themselves as moderator candidates if they were suspended after one year. Additionally, such users are shown a message before posting their nomination.
I know that this is technically feasible (i.e. that suspensions across the network are accessible by other sites), given that message, but why was the decision made to simply provide a soft block, allowing users to dismiss that prompt and nominate themselves anyway? Why not outright prevent them from nominating themselves (i.e. remove the "I want to continue" link in that prompt)?
I understand that users suspended within the past year can nominate themselves if they contact the SE team and obtain permission, and it should be easy for employees to clear the past suspension from their record, which would allow them to run, or otherwise set some flag allowing them to run on a certain site.
Please note that this is a neutral question; I'm simply asking why the decision was made to implement it that way.