Nothing says, "Change out the logo for something that doesn't make my clients tingle in an uncomfortable way" like the MIT license.
Thinking about it logically, putting some "serious" banner there would just make everything a bit more grey and boring and would make no functional difference. So why is it disliked so much?
I personally find anime kind of cringe but that's just a matter of taste.
> Thinking about it logically
This isn't about logic.
Clearly you proved that. What has sexual connotations is wildly subjective and plucking the opinion of one author/poet's critique from 15 years ago doesn't make it fact today.
There's nothing wrong with "subjective", by the way. You seem to think it discredits something (can't say what exactly), but this topic is subjective. It's not about logic (as if anything outside maths ever is).