I've had the same problem before where the tokens were worth not much but the moving fee was too expensive, and made it impossible for me to sell them and accept it could be worthless if not sold in time. .
Depending on the value of tokens on the ERC20 network to decide to make the move, I think ETH has done well in terms of pulling fees low when not congested.
I hope there will be more information in the future, but hopefully next season this won't be an issue for people to switch to another platform.
It is seems that they are already worthless even at the start because if not then I don't think their overall value will be smaller than the fee but don't lose hope yet as some tokens are just late to bloom, sometimes it can took them a couple of years for their value to grow. The high fees that we experienced can be a blessing in disguise for those dumpers to HODL their coin.
It's normal for the fees to subside when the network is congested so don't praise ETH for this but ETH have done a couple of updates/upgrades on the past. Did those help to lessen the fees in normal situations? I don't know it because I am not dealing with ETH and Erc20 tokens anymore.