It's not semantic, it is substantive. A maximally utilized SegWit block is larger than a maximally utilized current block.
I.e., if you were planning out how much disk space you needed years in advance, you would have to increase that figure non-negligibly if SegWit activates.
I.e., if you were planning out how much disk space you needed years in advance, you would have to increase that figure non-negligibly if SegWit activates.