I can deal with the onslaught of TLAs (three-letter abbreviations), but not numeronyms.
Seriously, why are numeronyms so popular?
I can understand them for some words that are annoying to spell, like i18n (internationalization) and l10n (localization), but they still do not make sense.
How is someone to guess what the N amount of letters between a word represents?
The worst offender in my book is "a11y", the short version of "accessibility". Not only because it reads like "ally" (which is a no-no), but also because it's ironic that the abbreviation for accessibility is inaccessible.
Anyway, that's my rant.