OK, we all agree that Real Madrid is facing next season full of greater strength and in my opinion European teams would really hate to be in the group with Real Madrid. That's the first thing because in terms of opportunities this will be detrimental to European teams, but for elite teams like Manchester City they will try their strength again and perhaps you could say they are still curious about Real Madrid. I myself will be happy to watch the UCL next season and wait for which European team can surprise us. I also hope that Leverkusen can maximize their opportunities in the UCL.
Based on the player material that Real Madrid has, teams that are in the same group as Real Madrid will think extra about how to get points when playing against them.
However, this cannot necessarily be justified because such a statement is just a scary image. Other teams that will play in the Champions League will not view Real Madrid as described because any team that will be in the same group as Real Madrid still has the opportunity to beat them.
Manchester City, Bayer Leverkusen, Inter Milan and several teams have different strategies and tactics that will be prepared when they meet teams that are known to be strong.
For me, Real Madrid is just normal and there is nothing to be too afraid of, like a team that never makes mistakes during a match.