Not really the case in any of the high cost of living cities - when I graduated undergrad in the mid 2010s, my peers where getting offers from Microsoft for 100-120K for their standard out of school dev positions, Amazon was better as was Apple from what I recall. Plenty of 23 year olds making that much?

Well there's always the possibility of increasing your salary over time, to over 100k, and save more that way. You might not retire at 45, it may take longer. Still worth starting as young as possible.