I disagree, and there is a lot of information which backs what I am saying:
1. What team is going to cut a player that they actually want to keep? The Clippers might pull shit like that to cut players just for payroll sake, but I am not a Clipper fan, so for me it's win/win.
2. The NFL is one of the systems that has actually brought parity to the league. More teams are competitive and less teams stink. Unlike the current situation, there are always players available for the dregs of the league to pick up and improve their roster.
3. Show me anything that proves your point. Every team turns over players every year. Everybody knows what is important is what impact players get turned over. Role players are a dime a dozen. Most teams turn over at least 3 or 4 players a year. In the NFL, if they release a player or two due to salary or personnel reasons, that is a high number. In fact I would point out there have been several teams where there has been a lot of turnover, and they were quite successful. The key is upgrading your talent instead of downgrading.
How many positions did Miami Heat turn over the year they won the finals. 3 guys traded for Shaq. Payton and Walker and Jason Williams brought in. That's half the team right there and they won it all.