It actually seems to be quite fashionable to knock the Tiger.
I did my PPL on Tiger Moths in 1958 and I loved every minute of it AND I would happily do it all again.
It would be fair to say that it was a complete slouch as compared to the Piston Provost, DH Vampire etc and everything else that followed in my life.
However, I suspect that those who criticise the Tiger have probably spent some time in such as the Extra 300 etc that are now freely available (but at considerable expense) all over the UK.
It would be interesting to see how they could cope with doing a display with only a Gipsy Major giving the ooomph.
It has often been said that the Tiger Moth was the easiest aeroplane in the world to fly BUT (and it was a very big BUT) it was the most difficult aircraft in the world to fly PROPERLY.