See here for another debate about strikethrough btw :
https://forum.inaturalist.org/t/correct-but-less-specific-identifications-should-not-be-crossed-out-upon-subsequent-improvements/12378
And here for a connected feature request you can vote for: 
https://forum.inaturalist.org/t/if-someone-refines-their-id-and-the-new-taxon-is-a-descendent-of-the-old-one-the-old-taxon-should-be-marked-refined-instead-of-withdrawn/14005