The deck isn't bad per say, it's just so incredibly outclassed that it doesn't have a place in the competitive meta. Combo wrecks it, aggro wrecks it and control is beatable by plenty of other means more efficient means. If you enjoy the deck and are finding success with it, great, keep playing the deck and don't let my words dissuade you. However, no, pogo Rogue is not a sleeper deck and will not break the meta until a lot of cards rotate.
the more optimized version destroys combo decks. it's only aggro that can beat it, and tbh it's getting better at aggro as well (although aggro if they draw well can still beat it quite easy if the pogo player isn't able to draw what it needs. this is why the deck has been stripped right back so it almost certainly will draw the pogos via the draw mechanics and only having essential minions in the list that work towards drawing pogos or copying pogos in some way)
I would check out kolento playing one of the more optimized lists. he wins almost every game VS. all kinds of decks.
I think people are still thinking of the slow version with the fal'dorei and elekk's when they say it's weak.
since it was refined it has over a 50% winrate now.
still there isn't much you can do against a well refined aggro deck from last meta with a few tweaks here and there unless you are a control deck.... and pogo's knack control decks as well if you are good at playing around the removal.. I haven't had much of chance to test it VS control decks though as there aren't many being played right now.
the version from day one that was like a miracle rogue was extremely slow and was very easy for aggro to beat.. the stripped back version with all the draw not so much though.
The more optimized version does not destroy combo decks. It has a chance against combo decks.
Edit: While not the best source by any means, tempostorm has Pogo Rogue at the bottom of tier 4. This version is an older version, but they no doubt have at least heard of the newer pogo rogue.