The mistake was using the "Kibi" prefix. "Kibibyte" just sounds a bit silly when said out loud.

Yes, 2**10 times this, yes.

Call me calcitrant, reactionary, or whatever, but I will not say kibibyte out loud. It's a dumb word and I'm not using it. It was a horrible choice.

"Giga" was considered to sound silly until it became common and we no longer care. "Yotta" sounds silly (to me) now.

When I read "KiB" I say "kib" and it's fine. Similar for GiB, TiB, PiB.

"I bought a two tib SSD."

"I just want to serve five pibs."

I usually just say kilobyte when speaking, and say “binary kilobyte” or “decimal kilobyte” if it’s not clear from context. I still (usually, but I forget) use the IEC symbols when I mean binary and the SI symbols when I mean decimal. The extra ‘i’ doesn’t cost that much.

"mebi" and "gibi" aren't any better, last one in particular if you say it as "jibby-bytes"

Does it really matter if it sounds silly?

Actually, it sounds very serious and appropriate.