I think it’s wrong to even assume that vanilla equals boring. Your article basically says “but boring can be good”. But good vanilla sex isn’t boring.
What makes sex boring or not boring is not the physical moves. There’s nothing more inherently interesting about doggy-style, or having your legs above your head, or spanking. All of these things can be boring.
What makes sex interesting and good is what happens in the MIND while it’s happening.
The mind is the biggest sex organ we have. And in most sex, especially the casual sex that seemingly considers missionary position “boring” does not engage the mind beyond the physical sensations we feel.
But truly good sex — we are connected, empathetic, in sync, emotionally present, fantasising together. Dissociation, disconnect — these are what make people define a sexual experience as “boring”. And so they try to engage themselves by changing into weird and wonderful positions, but that in itself won’t help unless you are in the right headspace.
Intimacy, if it’s present, means that whatever the position, whether it’s missionary, doggy, cowgirl, oral, anal, tied up, roleplay or whatever else — it’s the opposite of boring.
We think the positions are the problem. They’re not. What’s going on in your head is what makes or breaks good sex.