Hello, I hope this finds you well.
I would like to suggest that you please consider moving “Sync” from the second menu (Decks, Add, Browse, Stats, Sync) into the first one (File, Edit, Tools, Help). I am suggesting this because the items in the second menu generally relate to frequent “navigational” changes to the main actions that the user would make while using Anki, for example opening a deck or adding a card to a deck. Synchronisation, by contrast, is not a separate view that users open nor one of the more frequent fundamental/basic actions users will take while using Anki. I think it makes most sense to have the option to manually synchronise data under “Tools”, though I think that making syncing mostly automatic would be most beneficial to UX.
Thank you for your time and consideration.