He said this to point out the significant difference between Tottenham and Bayern Munich. He indicated that it is top team mentality to win as many games as possible. Even when you lose one game you can be under pressure. It is a good thing that he says this actually because it is really the truth.
Tottenham have never been under pressure to become competitive for the Premier League title. Because it isn't a realistic goal for them considering their history so far. But if you are playing for a team like Bayern Munich you had better do your best to win and be praised by people.
Now, we need to see how good is Harry Kane playing under pressure. He was good in Tottenham when playing without pressure, I hope it will be same. However do Southgate is pressuring Kane when he play for England? Kane is still good when he play for England.
Next ten days, we will see Bayern Munich meet Manchester United in Champions League.
Harry Kane is a top man and he will perform under pressure and there's no need to get him pressured he will perform for Bayern Munich and score goals for the Bundesliga Champions.
Southgate has nothing to pressure Harry Kane, He should rather consider his tactics for his daily use of Harry Maguire even even when in a deformed shape.
Yesterday, he fumbled big time again Ukraine National Team. AC Milan's defender Fikayo Tomori does better when it comes to defending but always gets axed when it comes to National Team Football. Southgate will never win anything with Harry Maguire at the defense.