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This particular feature request is in plan to be able to ‘add’ tags but, not have them indexed and don't have ETA for now (Index-Tags on ADLS).
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GA Index Tags for non-ADLS blob accounts.
Additional information: I’m pleased to announce that Blob index tags is now generally available! Blob index tags solves a problem that today requires customers to add a separate DB in addition to blob storage to provide query capabilities to find specific objects. Blob index tags reduces the complexity of having to add a DB and think through concurrency by allowing user meta data to be indexed and used directly on the blobs themselves. Blob index tags is one of the app-dev primitives that will make it easier for 1st and 3rd party customers to develop solutions on top of blob storage. Capabilities such as this speed up adoption of blob storage for application development For a good overview, read this.
refer - https://learn.microsoft.com/en-us/azure/search/search-howto-index-azure-data-lake-storage
Hope this answer helps! Please let us know if you have any further queries. I’m happy to assist you further.
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