rokejulianlockhart discusses the ability to modify the Latin case of a username in Discourse, noting that while usernames are treated as case-insensitive, the original case is preserved. They reference a limitation where usernames differing only by case or dots are considered invalid if already taken, and mention that moderators can change usernames but this may not be available to all users. The user seeks confirmation on whether changing only the case of a username should be allowed, citing related discussions and external examples. rovejulianlockhart briefly suggests the possibility might be feasible.
Although moderators [2] (and users, if permitted) [3] are able to modify their usernames, I’ve no registrations at instances which permit this, likely because of disadvantages similar to those described at t/62451/6, so I am unable to confirm. However, at least that disadvantage shouldn’t apply to this type of rename, so should it be permissible?
At t/164553, I see that Discourse appears to treat usernames in a case-insensitive manner, but definitely retains the original case.