Yes, as we are all going on holiday again this function would be valuable again! Please consider having this done, there are already 55 upvotes and counting.
Here is a similar comment, please have a look at this one as well. (And for the other people in the community, make sure to upvote that as well 
) https://community.hubspot.com/t5/HubSpot-Ideas/Set-a-User-as-Out-of-Office/idc-p/450782#M86059