It's funny seeing people get so offended and disgusted with Regulus x Harry when it's honestly not even that bad, as let's say, Sirius x Harry, Hermione x Snape, or any Marauder era character x Golden era character. Those have toxic and "problematic" themes/dynamics because of the age gap, their relationships to said characters, and the active participation in their lives (being teachers, guardians, yada yada).
Regulus isn't an adult. He never was, and he never will be. He died at 16-17. He has absolutely no recognition of, or connection to, any of the Golden era children because he died before he could ever meet them or before they were ever conceived. He is a "frozen in time" character. So there is nothing really problematic with Regharry or Regulus x any Golden era character (unless someone wants to make it so).
I mean, just think of all the pieces of media where a character is chronologically like 100+ years old but looks and acts like a kid/teen because they were frozen in time, preserved, or whatever (it's literally any vampire romance fantasy you can think of, or even "Avatar: The Last Airbender" with my favorite ship, Kataang). This is mostly how these ships with Regulus operate. He's either made stuck in time or preserved rather than being dead or dying, or he's brought back to life at the same age that he died.
I get that people like to age Regulus up so he can be with James, or age James down, or whatever, but canonically James is forever 21 and Regulus is forever 17 (both corpses, btw, lmao). Do you ship said 21-year-old and 17-year-old together? No, you turn the clock to change things around so they're around the same age again, and it's not weird. The same thing the other shippers are doing, you're not so different in that.
(but also, canonically, Harry is like 30 to 40 something years old now, while Regulus is still just 17…so maybe that's the real issue here?)
