My thoughts are that Squarespace needs to take this seriously, or else people may jump ship to another web builder. Since we have absolutely no control over these things to optimize performance, this may push people to start looking elsewhere. Hopefully they are planning on addressing this in a new version of Squarespace, such as 7.2 or 8. It's frustrating because for all of the great features within Squarespace, the beautiful templates and user-friendliness of the platform, there are several areas Squarespace ignores or drops the ball. In the years I've been using the platform, as an example, I don't remember any updates to the Form block functionality, even after other platforms such as TypeForm revolutionized web forms. But Core Web Vitals is the type of "con" to weigh so heavily, with no solution for optimizing performance, it may push even the most ardent supporters of Squarespace to look at other platforms. The first competitor to address this could see a lot of new subscribers, so hopefully it's something Squarespace doesn't just ignore, as there is a huge opportunity for them to steal people away from their competitors, rather than lose them.
