How Do the Transaction Fees in a Block Influence a Selfish Miner’s Decision to Reveal?
High transaction fees in a block can incentivize a selfish miner to reveal their secret chain earlier. If the honest network's latest block contains a significant amount of fees, the selfish miner is motivated to quickly release a longer chain to orphan that block and claim the high-fee transactions for themselves in their next block.
The fees increase the value of the block reward and the urgency of the reveal.