I'm more inclined to chalk it up to genuine incompetence when some major exploits like the Ungarmax glitch went untouched for upwards of a month strictly due to miscommunication between the English and JP teams.
The fact that there is no English branch of the STF means that all and any reports made against cheaters in general are having to be translated then relayed to their horribly understaffed JP team which honestly makes me question how many of the reports are even reaching them in the first place.