From this suggestion:
Blocking access to [suggested edits] allows us to prevent users who misuse it from editing through the tool, without needing to block them entirely (for example, [a user], aside from their current misuse, has authored several articles in the past).
Just a note that we’ve started work on a separate task that approaches this issue from a different angle. If you’re following along here, feel free to let me know whether you think that solution helps address your concerns—or if it still falls short of what you’re hoping for.
T390079: Design Exploration: Allow limiting "Add a Link" to new editors , explanation:
T390079#10786935