1/3 to 1/5 is consumed during summer months, depending on region and industry. It definitely is not a 50/50 split. Europe will get through this winter just fine, regardless of temperatures. But Middle Eastern countries that are not traditional producers, e.g. Pakistan, will struggle a lot to compete in the global market. Gas spot will remain volatile and Futures will struggle to stay stable.

Edit: the current dump in EU spot and obvious implications for future pricing in LNG shipping to the EU, bafflingly currently still evades public discussion.