Having Llorente as his second striker is a weakness of the manager more so than a weakness of Spurs.
Kane & Lloirente plays football in similair ways but at different levels. A manager that obidient to a specific type of striker is something I am not too keen on. That shows that he always plays with Tactics A and his Tactics B are never seen.
It's the exact thing that happened with Jose. Lukaku over Rashford every day of the week & he could not adapt his game to a different style of a different type of player. Zlatan, Drogba, Higuain etc.
Consider Guardiola instead - used Messi as a striker, used Zlatan as a striker, used Lewandowski as a striker, used Gabriel jesus & Aguero as a striker - all different types of a player. Same goes with his choices at CM, used Fernandinho, De bryune, Silva, Xavi, iniesta, Busquets, lahm, costa, vidal etc m- many different types of players.
Look at Klopp - Lewandowski as his central striker in one team, firminho in another as a false 9.
I worry about Pochettino because I feel like he has a strong plan A that he will stick with and will not change to plan B.
Bascially, he has the potential to be a nicer, cooler version of Jose mourinho. This is possibly why some fans want him whilst some fans like me remain a bit on the back foot.