the problem on many of them is getting trapped behind freight trainsI recently read in a railfan magazine that this is becoming worse because of the supply chain mess.
Fright train companies are running longer trains because of higher demand. Longer trains run slower, because there's only so many engines to go around.
Making things worse — slow freight trains would often pull onto sidings to let fast passenger trains pass. Now the freight trains are too long to fit into the sidings, so more and more the passenger trains have to wait.