They also don't have to think about kibbudim, but I did read Rav Herschel Schachter's thought on participating in a bris via Zoom: http://www.torahweb.org/torah/docs/rsch/RavSchachter-Corona-17-April-05-2020.pdf in which he wrote "If a grandfather is participating in the bris milah of his grandson via Zoom, it is permissible for him to name the baby. However, he should not recite the bracha of “asher kidash yedid m’beten” via Zoom."
That is fascinating!
I personally enjoy not having to rush from room to room, not having to worry about forgetting something in one place, to track down the pillows and kiddush cups that may have been left in one room, and most importantly, being able to give the baby full attention in the presence of his parents. Additionally, since there aren't distractions, we can all focus when discussing the baby's "post bris care."