I agree. Freeze outs constitute a better game of skill over luck, and less donkout flip sessions. Rebuys and Addons are vastly implemented for the sites to generate more rake, as the players get drawn in, by the higher GTD. This happens a lot, with freerolls
and moderate-GTD ($200-500) $1 buy-in tourneys with unlimited rebuys, like PKR's $500 GTD / $1 buy-in Crazy Stack tourneys, with unlimited rebuys. This was previously revised from the original 4-rebuy limit, to generate more rake, and to attract more players. Strange enough, it worked.
This also creates a tip in the scales during unlimited rebuy tourneys, for the high-BR players with 'not scared' money to easily chip-up, and gain a distinct advantage.