Do online-only files count toward the 300k soft limit of the desktop app syncing?

If I make online only (see screenshot below) 20k files located in a folder, so that it is going to be indexable in windows searches and fast to be found, do those 20k files really count toward the limit of 300k sync files?

Under large-deployments dropbox help I found that they say "used with sync", but it is unclear what "used with sync" means, please clarify : 

Users shouldn't sync more than 300,000 files.

This includes online-only files used with sync.

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LG gram 
Operating System/Browser (if using the web)
(Windows 11)
Dropbox App Version (if using the app)
232.4.5926