People are stupid, that's a general rule of thumb to go by
This is also one of the reasons I highlight how unsuccessful Arsenal have been, 140-150mil wages now, over 100mil for 5-6 years now, least successful high spending team in europe... fail.
Dortmund won the league and at the same time did woefully badly in the CL, last season they focused on the CL and sacked off the league.. they dropped 20 points behind in the league but got to the CL final. They don't have the squad size or budget to run a treble chasing team. Bayern do, Arsenal do, Dortmund don't. This year they also have a serious injury crisis with players out long term and lots of shorter term injuries. They weren't far behind the top till the injuries started to rack up. Lost another player for the rest of the season last week.
Two main central mids out, huge issue for any team, look at Utd(not due to injuries, they just don't have anyone), or City yesterday, both CM's failed to show up last night and Chelsea dominated them easily. Most important position on the pitch, they've also got one CB out for the season and have had both injured at points throughout the season.
They are struggling, but they don't have the second 65mil wage bill of squad depth that the rest of the top teams in europe have.
On their budget, they are completely unmatched in terms of winning a top 4 league and getting to champs league final, no one else is coming close. Atletico have done exceptionally well so far, if they win, it will be not far off a Dortmund level of brilliance frankly.