See comment below for conclusions on this issue.
#617 (comment)
This change was originally scheduled to take place in 2.16, but later discussions postponed the decision to the 2.17 transition.
If the work on removing kotlin-reflect is reflected in jackson-module-kotlin, the MissingKotlinParameterException change is unavoidable since it references KParameter.
#450
The same applies to resolving the following issue
#572
I have also found a way to significant improve performance when the strictNullChecks option is enabled, but it is difficult to avoid changing error messages when enabling this option as well.
ProjectMapK/jackson-module-kogera#44
So, remove MissingKotlinParameterException and replace it with MismatchedInputException(MismatchedInputException is a superclass of MissingKotlinParameterException).
This removal process will be done in phases, with deprecation in 2.15 and removal in 2.16.