I agree with your opinion that the result will be the same unless Barcelona makes major changes in its squad. Real Madrid has opened a huge gap in quality with its rivals, and this is not a gap that can be closed easily. Barcelona will not spend big money on squad restructuring and the gap with Real Madrid will widen. We have not seen anything to the contrary and I think Barcelona is waiting for a surprise and to leave Real behind.
In some seasons, unexpected things happened and we saw many times that the favorite team could not become the champion. It is very difficult for something like this to happen next season, but it is still possible.
How much Hansi Flick can maximize the players in their current squad is a question that still cannot be answered. Because if he can maximize it very well, then it is not impossible that they can provide something beyond expectations with all their shortcomings compared to Real Madrid. We can see Leverkusen in the Bundesliga last season, they actually had an ordinary squad, but Xabi Alonso was able to maximize it very well so that they were able to provide a very impressive game which led them to success.
It is not yet certain whether Hansi Flick will be able to do that or not, but the prediction that many people are discussing now is that he will have great difficulty because of the problems that are still within the team. Even if Hansi Flick fails to give his best, then I think many people will think it is normal because he doesn't get full support for something he needs.