Exactly. But I think the farmer actually did want to agree and lock in the price of the flax.
Only reason they were looking for a way out was because flax had skyrocketed and they wanted to sell to someone else.
Three times prior they replied with “Looks good,” “Ok” and “Yup.”, and then delivered the flax per the contract. It was only when the price went up they wanted to say they were not agreeing to it.
In either case the judge was pretty specific that this was not a precedent for the thumbs up emoji, but just that in this particular case it sure looked like consent based on past actions.