"Devops" original intent meant you don't have a separate "operations" department separate from teams "developing" your product / software due to competing incentives. "Dev" wants to push new stuff out faster; "ops" wants to keep things stable. Or "dev" needs more resources; but "ops" blocks or doesn't scale the same. The idea was to combine both "dev" and "ops" people onto projects to balance these incentives.

Then managers and cloud clowns repurposed it to apply to every person in a project so now every member is expected to perform both roles (badly). Or even more overloaded to somehow refer to "developer infrastructure" teams.