I don't share this same opinion. If I'm a new user under the current system I have roughly enough RC for a new post every other day if I remember correctly without HP. I make a new post and get upvotes on it earning HBD, HP, SPORTS and LEO. After a week I'll now have enough HP to make posts every day and potentially more.
Under a new system with no rewards I would only earn SPORTS and LEO after the first week. This means I'm still limited in the amount of interactions I can make on chain so I can't grow nearly as fast. This would also mean that I would need to sell my SPORTS and LEO tokens just to get the necessary HP to power up. This creates additional understanding for a new user to actually be able to use the ecosystem since they'll now need to figure out how to use a market to offload community tokens for a token that powers their account actions.
Not only will it create more education for new users but it's going to be even harder for them to obtain HP. Since SPORTS and LEO have a downward price pressure from users selling to buy more HP they won't be able to get nearly as much Hive for these community tokens as they can now. Not only that but Hive will become more expensive since it's inflation would likely be lowered creating a more scare resource from the start.
How is it any easier for me to manage account creations or delegations in that second scenario than it is under the current one?