Probably, probably not. The main point of importance is that an exchange isn't required to hand over the fork coins people think belong to them. Some exchanges are pretty quick when it comes to crediting on-exchange account balances on a 1:1 ratio, but it's clear that a large portion of the exchanges like to take their time, literally. Don't forget that enabling forked coins on their platform requires time and optimization, which is something people don't seem to realize because they only focus on their 'free money'. People should definitely grant exchanges more slack in that regard. If you want to avoid such situations again in the future, make sure you take your coins off the exchanges you are using before a fork takes place.