I am familiar with the FIFA's reasoning, and I just don't think it holds up. The best example is the NBA: advanced technical rules at NBA games aren't stopping anyone from playing basketball on the courts or at the High School level.
Also, the rules are different anyways. At the FIFA level, games are played on large fields for 2x45 minutes, there are 4 refs, etc. AFAIR HS level games were 2x30 minutes and we were lucky to have 1 ref, and so on. So the rules are already different at different levels, and people can deal with it.
Would it really kill soccer if we had video replay? Match outcomes are routinely altered by erroneous ref. decisions, decisions which the whole world except the ref. knows are erroneous because we see the 1000FPS close up 30 seconds later. It's become so nonsensical that at the recent Brazil game, the brazilian players after a bad ref. decision to send off Kaka with a red card were begging the ref. to look up on the stadion screen to see the replay which clearly showed nothing happened, but he couldn't be bothered.
I think everybody would be able to accept that at High School level games there's no video replay, and the ref. makes mistakes, while rejoicing that World Cup level games are not influenced by bad decisions avoidable just by having a 5th ref. look at the replays.
This would also move the game towards actual fair play in the sense that players wouldn't be constantly diving, lying about who touched the ball last, lying about what happened, lying to convince the ref.