And you can bet a graphic designer or subeditor will assume the lowercase e is a mistake and 'correct' it to 'E'.

Speaking of intermediate lowercase letters, the 'o' for 'of', and other prepositions, articles and 'functional' words remains a bone of contention. IoT tends to be that, not IOT, but not always.

TOS is more common for Terms of Service, though ToS would make more sense.

And Fibre-to-the-Home is most commonly FTTH, not FttH.

A bit of a mess, but I feel that where SI units exist, they should be adhered to, so we're singing from the same song sheet.