Subjective (adj)[0]:
existing in the mind; belonging to the thinking
subject rather than to the object of thought;
pertaining to or characteristic of an individual;
placing excessive emphasis on one's own moods,
attitudes, opinions, etc.;
Philosophy. relating to or of the nature of an
object as it is known in the mind as distinct from
a thing in itself.
relating to properties or specific conditions of
the mind as distinguished from general or
universal experience.
pertaining to the subject or substance in which
attributes inhere; essential.
Old memes aside, I (as a reasonably intelligent person) don't understand what you mean by that.
Please explain what you mean by "subjective" in this context.
Are you arguing that information like "the heat of vaporization of water is 100C at sea level," or "the island of Manhattan has a land area of ~23 square miles" is only valid or correct if I as an individual decide that's the case, otherwise it's false?
How about information like "On November 19, 1863, President Lincoln delivered the Gettysburg Address," or "I voted in the 2021 elections."
Are those subjective?
Think about that for a moment.