I have seen many people confused about the 30% fees such as in this thread

I mostly hear people say that the 30% fee is simply replaced with BUNNY. Whilst that is somewhat true, it isn't that simple. It's true the 30% fee is being replaced by bunny, but the USD value is NOT the same. If you read their wiki you can see that:

For every 1 BNB earned through performance fees, 5 BUNNY is minted and given to respective users.

This is the part that many people seem to miss or don't understand - and I will best explain this with a simple example.

Imagine you are staking on bunny, and you've gained an interest worth of 10 BNB over time. And let's say 1 BNB = $300.

You would think you would keep 7 BNB, and get $900 worth of BUNNY.

However, Bunny is given out at that quoted rate: for every 1 BNB, 5 BUNNY is given out. In this example, your reward would actually be:

7 BNB (keep original 70%) 15 BUNNY (from 3 BNB worth of fees).

And 15 BUNNY is a lot more than 3 BNB right now.

To put this simply, it is a multiplier on top of the quoted APR. Imagine the CAKE pool on pancakeswap is 110% APR.

Because of this 30% fee, we actually don't just compound 110%, but instead, we get this formula:

multiplier = 0.7 0.3 * (ratio of 5 bunny/ 1 bnb)

= 0.7 0.3 * 3.6 (for bunny at $216: 5x$216 / $300 = 3.6)

= 0.7 1.08

= 1.78

This is an extra multiplier we gain from staking on bunny, so although the CAKE pool's APR is 110%, we are actually getting 110% * 1.78 on bunny, i.e. 195.8% APR.

I hope this explains why people always see the BUNNY part being a lot more than "30% fees"

This is why BUNNY in the wiki says:

The 30% performance fee is collected but for every 1BNB in fees collected, we give 5 BUNNY, so you’re getting free money.

It really is free money :)