[int_19h]

It doesn't actually achieve that, it just makes you look like an ignorant Westerner. Similar to all the "-ski" stuff that Americans, for some reason, seem to believe is indicative of Russian.

If you want to troll Putin, call him Vovochka.

[margalabargala]

Putin is not in fact the intended audience, so the diminutive should be tailored to the audience, not to Putin.

Kind of like calling him "Putain", or "Poo-tin", which are also not his name.