Word history really isn't relevant. (BTW, the word history that I found online does not support your history assertion.) What is relevant is what a word currently means to speakers of the language. Definitions of "selfish" (adjective) found online do not support your assertion:
"(of a person, action, or motive) lacking consideration for others; concerned chiefly with one's own personal profit or pleasure." (Google search)
"devoted to or caring only for oneself; concerned primarily with one's own interests, benefits, welfare, etc., regardless of others. 2. characterized by or manifesting concern or care only for oneself: selfish motives." (dictionary.com)
"1. concerned excessively or exclusively with oneself : seeking or concentrating on one's own advantage, pleasure, or well-being without regard for others 2 : arising from concern with one's own welfare or advantage in disregard of others a selfish act 3 : being an actively replicating repetitive sequence of nucleic acid that serves no known function selfish DNA; also : being genetic material solely concerned with its own replication selfish genes" (https://www.merriam-webster.com/dictionary/selfish)
Word history really isn't relevant
there you go again
Love that quote. But that was so so THEN.
some things never change.
I agree with you, of course.
that's wise of you.