Casefold wording in ILIKE comment

Hi! While going through like_match.c [1], I noticed this comment around line 73:

/*
* MATCH_LOWER is defined for ILIKE in the C locale as an optimization. Other
* locales must casefold the inputs before matching.
*/

The non-C-locale path (Generic_Text_IC_like() in like.c) actually
calls lower(), not a Unicode casefold(), so "casefold" here seems to
overstate what's happening, especially given the ongoing lower() vs
casefold() discussion for ILIKE [2]. Would something like "downcase"
or "lowercase" be more accurate, to avoid implying the casefold
semantics already landed?

Source:
[1] https://github.com/postgres/postgres/blob/master/src/backend/utils/adt/like_match.c#L73
[2] https://www.postgresql.org/message-id/flat/64d7949bad90545f981ac7513fb0b4954daca2c9.camel%40j-davis.com