Of course they are weak. They lost every tournament last year and in most of them they were eliminated not by Bayern at all, but by other much weaker teams. The Champions League, then the Europa League, the German Cup - they failed everywhere. Now that Haaland is gone, it's hard to imagine that they've gotten stronger, right? And this means that in the upcoming season their achievements will hardly be better.
I would say losing all competitions you are in doesn't equal to weak. I mean Fürth lost and didn't get the title, and so did Dortmund, does that make them equals? Or Wolfsburg who had a good start but we all know what happened. Basically what we are talking about something that is "decent enough" and not bad or weak. I believe Dortmund is "weaker" which is something else.~
I highlighted with bold the main part in my statement, I'm surprised you missed it.
So, in the German Cup, Borussia was knocked out by St. Pauli. In the Champions League, they lost to Sporting and Ajax. In the Europa League they were knocked out by Rangers. If you compare these teams with the European tops, it is obvious that these teams are not even close to their level, right? For me, the conclusion is obvious - Borussia is just as far from the top and is a weak team, and after the departure of Haaland it became even weaker.