*cracks knuckles in autism*
People claiming pink and magenta are different colours are simultaneously right and wrong depending on the context of the discussion.
This is a Common Pink, dianthus plumarius:
This is the source of the word pink, and so ostensibly this is the colour pink. Somewhere in the realm of #f463dd, situated as expected between red and purple, rather than above red, albeit far closer to the red side of things.
Setting aside the question of colour reproduction in digital photography for the moment, different contexts mean different things.
So let us turn now to magenta, the colour formerly known as fuschia. Magenta covers any extra-spectral colour that lies between purple and red, without appearing green. It is a combination of red and blue that is situated too far red to really "look purple."
So the flower above is definitionally magenta, despite being the literal first example of "pink."
Let us now turn to the People What Decide The Colours, which is to say, optical scientists.
Pink and Magenta have huge overlap, but pinks extend far warmer, and magentas extend far colder. This is absolutely a terrible diagram, but I think it gets the gist across.
Now, getting back to the question at hand.
Some pinks ARE light reds, but others are light magentas, and others are light oranges! However, "pink" as a generic term includes light reds but is significantly broader than only light reds.
So, while pink includes light red, it is not the same as light red.
Thank you for attending my infodump.
