Currently, under some OS-language combination, Obsidian downloads one time, on first use, the dictionary needed for the spellchecker from a Google-owned CDN (Content Delivery Network).
Some users have privacy concerns about this request.
Solution 1
Move the dictionaries from a Google CDN to another CDN.
This would really not solve the problem. It’ll just move it from one company you don’t like to another company you also probably don’t like.
Solution 2
Bundle the dictionaries with the APP.
Current workarounds
Block Obsidian with some firewall rules. Route traffic via a public VPN. Etc.
This is actually misrepresentative of my initial feature request, which was to reduce network requests, only one of which was the spellcheck dictionary. More details here.