With all due respect, have you read the article? Attributing this to prudishness misses a lot of what’s actually being said: that shoe-horning in romance or sex for no reason is the problem, as well as lack of attention being given to developing platonic relationships. Exploring non-romantic or sexual relationships better doesn’t necessarily mean cutting out sex and romance, and imo, would likely lead to better sex and romance in TV and movies.
But I agree with you also, that gratuitous sex and nudity can be used to great effect. Another user lemmy.world/comment/4888355 (don’t know how to link comments, hopefully this will work) posted a link to the article “Everyone is beautiful, no-one is horny” above, and this really highlights the problem on this side of things, in my view