TTGL and KLK had high quality boobs dammit! Don't hate on those, don't take this from lonely teenage boys without access to real porn yet!
There's a bunch of statistical research that suggests lower-level sexual content might substitute for other more harmful sexual things rather than encouraging it - e.g. the research that rate of internet adoption correlates very strongly with the rate at which rape statistics fell in each of the 50 states (almost all amongst the 15-24 age group), but they don't correlate well with falls in violent crimes in general. So there's some weird strong correlation between people getting internet connections and young men committing less rapes. While any explanation is possible, the only real plausible one is that internet porn substituted for going out assaulting women.
About 6 countries that legalized porn, but neglected to enforce minimum ages, saw falling rates of child abuse after the legalization. Such falls have not been shown in countries which legalized porn but were more strict on underage depiction. So there's evidence that "pretend sexual material" does in fact substitute for real acts, rather than encourage them (or at least it reduces them overall). The upshot is trying to scrub all sexual references and imagery from normal media is almost certainly not only silly, but potentially harmful to society, as it may direct young people more towards actual porn or actual real-world risky sex and/or rape.
There's this thing you hear criticizing fanservice: "why does Show X have fanservice, that's just low-level porn. Go watch porn if you want that". I don't think it's that healthy for their to be hardcore porn and normal media with an artificial gulf between them, and the gaps between genres are in fact artificially contrived: that's why the types of genres in Japan are similar but not the same as the genre breakdown in the West.
Anglo-speaking society is just way too puritan about this stuff. e.g. anime watchers in America want anime to be "taken seriously" so they want all the adult-oriented fanservice removed to make them more like American cartoons. Which is oddly ironic that they want something scrubbed of anything that makes it non-kid-safe in the goal of making it more sophisticated
I had a French friend who saw Ranma 1/2 on TV as a child. Nobody made a fuss about the nudity.