I agree on the above but then you have to add in the Porto & Inter spells which were phenomenal. His first Chelsea team is still one of the great PL teams as well in fairness and he was the first coach to really use the 433 in the PL consistently, which still is seen a lot today. It's a bit like Conte coming in and introducing the back 5 or Klopp showing how successful pressing can be for 90mins (remember when he arrived literally everyone said you can't do it for a whole season), the best managers leave a bit of a legacy. In his prime he was innovative and brought a lot of new ideas, the issue is football is ever changing and so his style, especially the way he sets Spurs up, seems so backwards when you think of the attacking players they have.
That said, in the same way fans shouldn't get too cocky about their teams doing well given how tight the league is, there is a long way to go and Spurs have a nice run of winnable games now so I'd expect them to still be around the top four until the season's end.