I'm sorry but that's pure horsecrap. He's the best in the business at that. The thing about tactics is that they're more of a short term solution. You still need individual ability, footballing philosophy, and an excited locker room to win games. It's those other factors that are lacking in the teams he coaches.
Once you lose the locker room, you shouldn't be there anymore. But let's not take away from his strengths.
I must disagree.
Tactics are definitely not "a short term solution". Tactics are what gives shape to a team. If played right, they can make eleven players move and (almost) think as one, thus making them look better than the mere sum of their individual skills. If you lack a clear tactical plan, you will always depend on individual moments of brilliance and that's what I would call "a short term solution" (we Inter fans should know that).
Mourinho has always been a "demolition worker" (no offence intended since there's none), rather than a builder. His teams have always preyed on the opponents' mistakes, chocking their build-up and then springing forward to hit them with clinical ruthlessness. Should he be ashamed of it? Hell, no. Does that belittle his achievements? Again, no. At the end of the day, that's just another way of pursuing the ultimate goal, which is of course winning.
However, the reason why I don't consider him a "master tactician" (which doesn't make him an amateur, as I suspect you might have intended it), is because he struggles when he has to "force" the aforementioned mistakes. His game plan relies too heavily on the exploitation of the opponent's missteps, so whenever he's faced with a team that sits deep and leaves the initiative to him, his players have a hard time unlocking the defence.
Back to your post, if the tactics are the same he has always used and he's still "the best in the business at that", then you are just validating my point: it wasn't his tactical acumen that made him great, but rather his ability to get the 100% out of every player, which he now seems to have lost. Lastly, aren't "footballing philosophy" and "tactics" respectively the theoretical and practical expressions of the same concept? So how could Mourinho's players know the tactics without grasping the philosophy behind them?