I very much doubt this was the cause of you missing your slot or the delay.
Despite public perception, crew are usually very patient and try to be accommodating. There does become a point however where the crew member needs to be quite clear that they have done their best to accommodate and that it isn't possible to give what the passenger is asking for on this occasion. IMO, to 'molecoddle' can lead to you going round and round in circles and so you have to be quite firm sometimes. To not have that assertiveness or confidence to say that isn't always a good reflection on a crew member.