I don't think this is even remotely true. Try going down to a city park and getting into a pick up basketball game. Now try it out of shape and wearing penny loafers and see how many times they pass you the ball. Isn't this similar to what the OP did?
Ever just walk up to a bunch of soccer players getting ready to start a game and see if you could join them? Maybe hop into a volleyball game or a softball game? Would you usually be welcome? Cycling is one of the only sports where a complete outsider is welcome on most rides. Yes, there are a few "elitists", but there are far more friendly and welcoming bike riders and racers.
i agree. when i started playing league racquetball a few years ago i subbed one night up in the 'A' group where i was pounded mercilessly by serious and experienced players. but after each 15-0 ass kicking, each guy took the time and very kindly gave me some really important pointers on how to actually play the game correctly at a higher level. for the next few months i had to check my ego at the door before playing, but i got better in a hurry.