People are curious about Dortmund's performance because they are wondering how successful they will be after selling Haaland. They weren't too impressive against Leverkusen in their first league game but they still secured a 1-0 win. However it is obvious that they still need a significant improvement in their effort. This is not enough for staying in the title race mathematically for a long time. I'm not saying that they can keep up with Bayern Munich until the end but at least they can hold on for longer.
That is inseparable from the behavior of those who always make movements contrary to what Bundesliga fans expect. We are waiting for a move from Borussia Dortmund that can improve their performance to break the dominance that has been held by Bayern Munich for a very long time.
I personally have always been disappointed with the movement of Dortmund from year to year.
That's mainly because of bad transfers after selling great players, and then getting good players because of bad transfers. They had sancho and haaland who left, and now have Jude Bellingham who will for sure leave eventually. What they do is, they do not get players who are equally good and have potential, sell a 23 year old great kid, and get a 19 year old version of him. They do not do that. They sold Haaland and got Haller or someone whatever his name is, who would think that it would be similar, of course not.
Take a risk and get someone like Haaland, even a random fan would have made a better transfer for sure and that's going to change very soon because the management will have a hard time keeping the club together.