I don't think that Stinsons are any more prone to poor take performance than any other old aircraft. Older aircraft may be more prone as over time all aircraft put on weight ( accumulated dirt, oil & grease ) and also older motors may not make their rated horsepower anymore.
As mentioned before I have a mate who has a Stinson 108 ( same as both these videos ), his was built in 1947. His take off performance is fine but he operates it wihin it's limits. I have been in the back seat of it with 2 guys in the front, all up we ( pilot & passengers ) weighed over 300kg. This meant we only had required fuel + reserves but we got off no problems at all. The Stinson is a classic aircraft that when treated right is a great fun machine.