Yeah, but lets say I have two servers, one hosts matomo.foo.com and the other hosts matomo.bar.com and I want to update each of those for the second time (the commands are already in the history from last time), with sync I would have to pay much more attention to get the correct commands from the history when I recall the commands for upgrading the database in the correct vhost dir for each (some php matomo.php core:upgrade or similar invocation using a script in the vhost dir), especially when it is mixed in with commands from 50 other servers.
Or lets say I run some dangerous command on the dev server (DROP DATABASE), without sync I can never accidentally use it from the history on the live server.