regardless, the title of RAM gives the impression of writeability, as the overwhelming majority of memory which bears the title of RAM have writeability as a trait, and even though random access memory doesnt imply writeability as a necessity, it's generally considered to be a given, and most would still likely consider RAM to be an improper name for this device
That is a misconception. RAM can be read-only and ROM can be randomly accessible.
this is a ROM, not RAM. RAM is writable and readable but this thing is only readable, so it's a ROM.