Don't feel you have to share anything you don't want. Tell us as much or as little about yourself as you want. Some people just lurk and never say anything.
You don't have to "maintain" an online presence. Respond or not respond as you wish. Take a few months break and then come back, if you like. The only thing is, some instances might go down so just check to see if squawk.social is still there every few months or so.