Our OTP isn't the best, but it hasn't got much to do with the age of a fleet really. Brand new aircraft can be just as (if not more) problematic as older ones. They are all maintained to the same standards.
No airline wants delays, they are frustrating, cause us chaos and also cost a bomb long before you can get to legislation like EU261.
The problem with this particular bit of regulation is that it takes no account that sometimes when operating a very complicated machine such as an aeroplane with hundreds of people involved in every movement that sometimes stuff just happens that can't be forseen.
Often the problem has naff all to do with the airline, but with a myriad of other problems caused by others, but this legislation doesn't allow us recompense for that, we just get hit with the cost and the enormous interal cost of dealing with the claims in the first place.
We don't delay passengers because we want to, which is something you might want to remember before you send your form in.
For this season we have more aircraft than ever before and STBY machines to try and minimise the effects of delays, plus there is a load of work going on to look at where and why delays are happening. None of this is because we are worried about EU261, but because we don't want to delay passengers in the first place.
Sorry about your delay, but sometimes, they just happen and beating up airlines and taking even more cash out of them doesn't help fix the problem, it actually makes it worse as it diverts the money needed to fix problems.
However, if you think that a few quid will make a difference to you, then go ahead, but it's a bit ambulance chaserish if you ask me.