The part worth thinking about is why burn the resource fee 100% instead of splitting it 50/50 with the leader, the way the base signature fee is split today.
Start with who does the work. The leader builds the block, but every other node has to replay and vote on it, which means re-executing every transaction. The resource cost a tx imposes isn't paid by the leader alone, it's paid by the whole network. So if a fee prices that cost, it makes more sense for the whole cluster to benefit through the burn than for the one node that happened to be leader to pocket half.
There's also an incentive problem with splitting it. Leaders already build blocks to maximize their reward, today that's priority fees plus their half of the base fee. Give them a cut of the resource fee too and you add a new dimension to that: they'd earn more from how many CUs get consumed and from any traffic that pays, including wasteful traffic. At the margin you'd be paying block producers to fill blocks with heavy junk. Full burn removes that lever, the leader has no reason to care how many resources a tx burns through if they aren't paid for it.
And this takes nothing from validators. base/2 priority fees stay exactly as today. The whole debate is just whether this one new fee stream gets burned or captured.
On scale, even rough numbers point the same way. Using the requested-CU data posted in the thread (~16-18T CUs/day) at 0.1 lamport, the burn lands somewhere around 1,500-2,200 SOL/day at current usage. A 50/50 split hands maybe ~750-1,100 SOL/day to the entire validator set combined. Per validator, that's noise.
Now weigh that against the base it's competing with. Very roughly, hundreds of millions of SOL are staked earning mid-single-digit APY, which is on the order of tens of millions of SOL/yr in rewards across validators and delegators. A validator's reward scales with SOL price across that whole base. I'm not claiming this burn moves price by any specific amount, but you don't need much, even a small improvement in tokenomics is worth more across that staked base than splitting a few hundred SOL/day, and it's shared instead of fought over.
That's the trade: capture a tiny per-validator stream now, or burn it and let any value accrue to the whole staked base. The second is bigger in expectation and it's positive sum. Win for Solana.