no this is not my very first contribution to OSM.  
I had many edits before to the project and used it before and I'm somewhat an experienced user.  
I had deleted my OSM profile to remove my digital foot print on the internet for privacy reasons.  
  
The method I used to get the spam data are 1-overpass 2-osm search by Nominatim. 3-basic lookout around osm.  
note I did not dig deep, and maybe there is ton of spam left.  
About the one node mentioned you asked about, yes that one and couple others shall not be deleted. I also noticed there is points that I only deleted the names from while I should have had delete them fully. I also did many other error and caution fixes in this changeset.   