I'll trust Berman over Kurtzman in a heartbeat when it comes to honoring Trek continuity but let's not pretend his behavior is "acceptably" normal nor should be shrugged off.
It was admittedly easier for Berman though, as the series under his control were all produced by roughly the same people and during the same timeframe. Not only are the Kurtzman series not produced by those same people...but they are decades apart (yet require more direct linkage), so it's a bit harder to keep track of I'd guess.