Overtime is a problem.

[Aravell]

I think overtime is good for a second chance and it is also good if the teams are tied, it makes it way more intense to play and try to get the win.

I don't understand what people can have anything against it?

I don't think people have anything against overtime existing as a mechanic, it's just that it should have a time limit of its own. It's very rare but you can get matches that go over 20 minutes because the teams are quite evenly matched and neither team can actually break the checkpoint.