Yeah, the points totals get ignored a bit too much because how bad the elite teams were with no one really having an elite manager other than Chelsea and their collapse this season happened for so many different reasons that it's difficult to draw conclusions from it.
It's not just Mourinho who often raised the points total of his teams in a crazy way in the past, when he took over struggling teams. Guardiola took over a Barca team that finished on 67 points and had them play consistently great and finish on 87 points the following season. Conte took over a struggling Juve side that finished on 58 points and had them finishing on 84 points the next season. Klopp took a bit longer, but he also started at a team fighting relegation. They finished on 40 points before he joined, on 59 points in his first season and then he turned Dortmund into a consistent team that set a new Bundesliga record for points in their 2nd title winning season finishing on 81 points. Top managers can have a significant impact on teams, especially in struggling top teams with the ressources to do so much better.
Spurs finished on 72 points in 12/13, on 69 points in 13/14. Poch took over and had them on 64 points in his first season when Chelsea easily ran to a 87 points finish. Obviously Spurs have done brilliantly this season, but it's not like they're playing a season that would be good enough to challenge Chelsea, City, United at their best in the past 10 years. And that's the level you expect the top teams to return to soon enough just like Mourinho had no problem doing it at Chelsea last season.
Spurs need to step it up next season if they want to challenge for the league. They have a young exciting team and they might actually do it, but despite all the massive problems at the big English clubs, it wouldn't be surprising to see at least 1 or 2 of Guardiola, Conte, Klopp and Mourinho (if he takes over at United) to get it right and their teams to show a crazy upswing in points collected, pushing the points necessary to win the league again close to 90 or even beyond that. It's what these managers have done before more often than not in their careers.