In case you’re wondering what happened, from the thread: He sent ETH to the WETH contract, received WETH as expected. Then he wanted to do the reverse and sent WETH, but will not receive anything, because you're supposed to swap your WETH to ETH in exchanges like Uniswap, or call the "withdraw" function in the contract. For contracts that want to only work with ERC-20 tokens, you use WETH, which comes from a contract…
I think this is a problem with crypto that will forever prevent it from becoming mainstream. The average person understands the concept of money but understanding smart contracts is out of scope for a large part of the general population m
"Gas" is one of those concepts where I have to relearn what it is every time I read about it but never can retain it for very long. (See also Big O notation.)
Say what you will about the primitiveness of Bitcoin and other early coins but at least they're quite a bit more comprehensible.