This is generally only if you have good losses. Losing to a ranked team doesn't hurt much. Losing to unranked teams do. I've seen teams plummet from the top 10 to out of the rankings following a bad loss.
Unless our opinions of how much it should weigh are drastically different, I whole heartedly disagree with this one. Beating ranked teams has a big effect on a team's ranking the next week. As I wrote above, losing also doesn't hurt nearly as much.
I'd bet that a lot of teams that you think the polls are favoring because they're traditional powers are losing to a lot of ranked teams. I don't think they're staying ranked because they're Miami. I think they're staying ranked because they're losing to ranked teams instead.
Here's an example from the current poll in week 8 of 2029.
5* Ole Miss (who won the SEC 2 of the last 3 years) dropped 15 spots because they lost to crappy Texas St. 4* Auburn (who has never won an SEC title in my dynasty) only dropped 3 spots because they lost to #1 Tennessee.
3* Illinois entered the top 25 by beating #10 Ohio while 5* (and consistent B1G powerhouse) Ohio dropped 8 spots for losing to an unranked Illinois.
Meanwhile, at the top of the polls, #1 Vanderbilt (who surprisingly enough is consistently one of the top 2-3 teams in the East) picked up their 1st loss and plummeted 9 spots because they lost to an unranked Virginia Tech.
At the same time #4 Arizona State (a 2* school mediocre @ best school in the Pac12-W) only dropped 4 spots w/ their 1st loss because they lost to a ranked Miami team.