Adults fucking teenagers has always been a weird thing. Like, it was normal for most of human history and has only recently become a legal issue because back then a teenager was already an adult. This was one of those tribe/village things where it really depended. I'm pretty sure most people don't care much about young men scoring with a woman older than him because that drive is just a male thing. When it's a girl with an older man, it's the issue of the day because we naturally want to protect women, even if we say they're responsible for their own choices.
Denji is a young man who grew up in poverty and literally sold his organs for cash. Shinji is an emotionally vulnerable teenager on the verge of a mental breakdown most of the time. This kind of context is also important. If the former scores with a grown woman (not elderly or especially unnatractive), I'm absolutely certain almost all of us would feel happy for him. If the latter does, I'm sure we'd all be concerned because he probably cried during it.
But enough of my autistic thoughts about this subject brought about by a relatively low-effort meme
my boy denji needs some fucking love, man
enough with the abusive bitches, please