Yep, if you are going to leave a project as leader, either see if someone else wants to take over or leave a note that the project isn't being updated.
If you are really motivated, leave instructions on how someone else can pick up were you left off even if it is just an email address others can reach out to.
Letting your project die is a whole lot more responsible than picking a successor maintainer that you are not 100% sure you can trust to be a good steward.
If you are really motivated, leave instructions on how someone else can pick up were you left off even if it is just an email address others can reach out to.