I think high transaction fees are going to do the exact opposite.
Higher transaction fees mean that more miners are incentivized to turn on their rigs and start mining Bitcoin.
This will lead to smaller miners being more profitable.
Transaction fees have increased something like 10x over the last little while.
The people who are transacting are sending something called "ordinals" - jpegs (pictures) inscribed on Satoshis.
They are spending A LOT of Bitcoin in an attempt to attack the network (because they don't seem to care about it).