Many old cars go on to become rusty old bangers and when they reach that point in their life, so why not go out in a blaze of glory as a bit of a laugh?
I had a old Cortina one that I hated with a passion because it was such a pig to start in the mornings, eventually I forced it into second while doing "a fair lick of speed" and dumped the clutch... the gearbox let go in a most spectaculay manner :-) shortly after that I part owned a purple Prisma 1600, no matter how hard we drove that car it would just not give up (picture valves bouncing off the underside of the bonnet), we absolutely thrashed it mercilessly but it just wouldn't die. But we had a huge amount of fun trying. It doesn't mean that I don't like Lancias though and it does't mean I'd do the same to my pride and joy.
I also once watched my friend drive/smash an Allegro Vanden Plas through an old RAF wooden billet hut (in a Bodie and Doyle / Starsky and Hutch style). I guess the Allegro owners club wouldn't appreciate it but we thought it was highly amusing at the time.
Moral is, old rusty cars are what they are - old rusty cars that are either going to be crushed - or in this case blown up by TG then crushed.
I'm sure I'm not the only one to have given an old banger a memorable exit. ( Thats why banger racing is such a hoot! )
Anyway, lets see the program before passing judgement on the TG team.