Barcelona and Real Madrid fans might be happy about Atletico Madrid's decline in performance, having lost a rival in the title race. However, I don't think La Liga fans are happy about it. This will make La Liga even less competitive and exciting.
Atletico Madrid hasn't been very active in this transfer window. They've only made a few additions. They brought in several top players last season, but they needed time to adapt, which is the main reason Diego Simeone is so supportive. They've been leading this season with confidence and a strong squad. However, the results in their first two matches have been quite surprising. I think the problem now lies with Diego Simeone's tactics, as he is the one primarily responsible for the team's slump.
Until now we have seen a title fight between three teams. After the decline in Atletico Madrid's performance, now only Real Madrid and Barcelona will fight for the La Liga title. Although there are several other strong teams, I can't find a squad suitable for winning the title in La Liga.
In La Liga, several teams compete to qualify for the Champions League. But we don't see much competition for the title. This has gradually made La Liga less competitive. La Liga is lagging behind the Premier League and Serie A.
Atletico Madrid's squad is not weak at all. They have a lot of talented players. Even then, they are not able to perform as well as expected. Simeone is one of the best coaches in Atletico Madrid's history. But now Atletico Madrid management should look for a new coach.