Yes, it cannot be denied that their inconsistency in each match is quite bad and really affects the results of their matches. several times they even wasted opportunities to win against several middle-class clubs. But it's true what you said, they are quite enthusiastic when playing against a big group. This inconsistency is what often makes Tottenham fail.
Inconsistency only adversely impacts a club that is performing poorly in matches; they have no strong grounds to improve a team's performance. This demonstrates that the English Premier competition is unquestionably an overcoat competition in which only the strong survive. Tottenham Hotspur is a very competitive club, despite their lack of consistency in EPL matches, but we shouldn't blame the coach, Ange Postecoglou, who was keen to secure top points for Spurs has observed the league and now knows it's not easy to adapt to the club's style of play.