https://wiki.archlinux.org/title/List_of_applications/Internet#Pastebin_services
That pages shows how to use curl to upload to 0x0.st.
I’ve used the pastebinit program listed on that page to upload to paste.debian.net, but it supports other sites as well.
So, officially no. But there are ongoing theories in the r/emulationonandroid subreddit that they are.
I think it could be either way, but it’s unlikely that they are the same person. In both cases, harassment caused them to shut there projects down, which could be a reasanobale coincidence, or could be indicative of a larger harassment campaign.