I’m pretty sure QWERTY telegraph keyboards post-date typewriters.
Yeah they do! Actually a Japanese research paper (and this video) also theorises that they also grouped similar sounding letters in American Morse Code together (e.g. Z ∙ ∙ ∙ ∙ & SE ∙ ∙ ∙ ∙, or C ∙ ∙ ∙ & S ∙ ∙ ∙)

Uhh, this might be true for WebRTC, except not much uses WebRTC other than for realtime streaming/calling. Jellyfin for example is just an mp4 stream over http; and http(s) will only use the IP in the DNS record. I'd like to see a packet capture if you are certain something is switching IP.