In a word - No. They will get you to your destination with no further cost to yourself. Inconvenience Yes.
Yes the flight will be full but you will almost certainly find in the small print that they could have delayed you longer still!
The airline staff (or their outsourced staff) WILL 'act dumb' because there is nothing that they can do. It is a subject much debated in here. In short, the carrier givs the staff zero discretion - they must treat these events by the book to limit costs. Therefore, it is better for them to 'act dumb'. They don't like it either.
I had something similar many years ago going to HKG and was nodding off during the (project critical) meeting.