Is there an engineering reason why fuse/breaker infrastructure can't be upgraded to handle solar storm conditions & cut off the large transformers from the grid rather than planning to let them die and replace them from a stockpile after the fact?

Even if it costs more money than "lol stockpile" I feel like it would be still be the better choice once the time/manpower it would take to move and hookup stockpiled transformers is taken into account, and more resilient in case the storm flares up again two days after we've finally got all the transformers back online