I liked the Routemasters ... but they were a pain if you had larger bags or buggies.
...Or knees. The seats were far too close together and the ceilings were too low for anybody close to 6 foot. And each routemaster came with an over officious conductor who inevitably told you that you were standing in the wrong place.
Bendy buses have large doors with can let people on or off very quickly without them falling off the back when drunk. If too many people are evading the fares then put conductors on bendy buses, less conductors and you don't need a new fleet of buses.
The campaign against bendy buses is led by drivers and cyclists who don't like the fact that they are difficult to over or under take on the roads. Passengers on bendy buses seem happy with them.