Slashing is a punishment like mechanism that are followed on different blockchains but I agree with you that not every blockchain follow slashing mechanism and mostly blockchains that work on proof of stake mechanism use slashing for giving punishment to their validators if they are doing something against the rules

Secondly I appreciate your example in which way you explain it by taking Ethereum blockchain and you also apply this example on validators of this blockchain that how slashing apply on them if they are doing anything malicious as well as you have also explain that how extent of punishment varies from person to person depending up on their level of rules violation

You have also explain in a good way that as a blockchain user how can you avoid slashing mechanism as well as you have also explain advantages and disadvantages so over all a very good and presentable content from you I have seen I wish you success and good luck in this engagement challenge