Around 62% of all Internet sites will run an unsupported PHP version in 10 weeks October 14, 2018 https://www.zdnet.com/article/aroun...l-run-an-unsupported-php-version-in-10-weeks/
For an ordinary user is absolutely no problem there. This is a problem for servers. Unfortunately, very many servers still use versions 5.2-5.6. And a very serious problem is the hosting of a site that requires at least version 7.0-7.1. During the past year, many of the smaller hosts that offer hosting services, have disappeared, they simply cannot be used anymore. Currently is so hard to find good server, they uses 99.5% outdated software or are at all disappeared, closed etc.
WordPress to show warnings on servers running outdated PHP versions January 15, 2019 https://www.zdnet.com/article/wordpress-to-show-warnings-on-servers-running-outdated-php-versions/