I don't know why people project fear on others lately all the time or project deep scary depths. Sometimes it is simply that quick change makes you suffer.
However, people who tend to reflect on themselves and the life they lead, will find it easier to adjust. Also, I'd presume stuff like personality types matters too. It's more difficult for someone who's used to being around people and sharing everything with them to switch to isolation.
Part of the idea, from what I can tell, is that the emotion (e.g. fear) in many cases doesn't appear at the surface level because it is "unacceptable" to a person, so their mind/brain assists in disguising it. But—the symptoms it causes are still there, hence this process of associating (visible) symptom sets to (non-visible) root causes, so that a non-superficial way of dealing with the problem might be recommended.
Like with masks - those opposed them like to frame wearing them as fear "I will not be afraid". It is never responsibility, caution nor fashion nor "who cares why not". It must be fear, because it shames.
Falling out of your comfortable routine can cause some immediate suffering. Continuing to suffer months later is a different matter.
You need years of preparation of social network able to help you cope, not like two months.