As long as his moves are legal, i.e., envisaged by the British system, not someone's personal ideas what democracy is, it is democratic.
P.S. Those "elected representatives of the people" could not find a way out of a paper bag in the last three years, so...
The latest head honcho was not elected by the people; he was selected as
visibly most radical (and funny enough to charm the populace and bring about total withdrawal) by the inner sanctum of the Conservative Party who then had it rubber-stamped by the rest of the sheep on pain of death or, worse, expulsion from their chosen career path.
As for the move being envisaged by the British system: I doubt that winning by purposely forcing Parliament to run out of time is an accepted way of doing politics in the land formerly known as Great Britain or, if you rather, the United Kingdom.
It is, of course, a great object lesson for all the other mini-tyrants and/or dictators around the world to study, and from which to learn. Or was it the other way around?