I have been predicting for years that microfilm is about to disappear. Major proof of that has just been announced by FamilySearch:

Due to the rapidly diminishing supply of microfilm, the ability to request copies of microfilms from the Granite Mountain Record Vault to be viewed in the FamilySearch Library will no longer be available after Saturday, July 15, 2023. We are currently working on alternate methods of access for microfilmed records that cannot be released to the public online. We apologize for the inconvenience and appreciate your patience as we develop these alternative options.

If you have any additional questions, you may contact the Family History Library at FHL-SLC-FilmRequests@churchofjesuschrist.org.