People do seem to be getting their hopes up unrealistically. When the government announced the start of the lock-down and said they would review in 3 weeks, a lot of people seemed to think it might be over in 3 weeks!
Having a vaccine ready for trials is nothing like having a vaccine ready for use. We need to show that it is safe. We need to know that it isn't going to have any unintended effects on pregnant mothers and their foetuses. Finding that out is going to take more than a few weeks. The last thing we need is another Thalidomide. Future generations won't look too kindly on us if we rush a vaccine through causing a generation of malformed babies just so that we could get people back to work a bit quicker.