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With #17187, we verified IndexService creation during initial state recovery on the master and if the recovery failed the index was imported as closed, not allocating any shards. This was mainly done to prevent endless allocation loops and full log files on data-nodes when the indexmetadata contained broken settings / analyzers. Zen2 loads the cluster state eagerly, and this check currently runs on all nodes (not only the elected master), which can significantly slow down startup on data nodes. Furthermore, with replicated closed indices (#33888) on the horizon, importing the index as closed will no longer not allocate any shards. Fortunately, the original issue for endless allocation loops is no longer a problem due to #18467, where we limit the retries of failed allocations. The solution here is therefore to just undo #17187, as it's no longer necessary, and covered by #18467, which will solve the issue for Zen2 and replicated closed indices as well.