Well I completely agree about insert, but intentionally creating bars with incorrect numbers of beats without alerting the user seems like the wrong way to handle this IMO.
For example, if we start with this like in my above gif:
In Finale I either end up with this, if the bars contain default whole rests using these settings:
Or this if they contain notes:
I can deselect Rebar music and force the measures to be incorrect (4 quarters in each 3/4 bar in the above) too, but that’s not the default. Finale also has the Check Region for Durations command to find any bars with incorrect beat counts.
MuseScore acts a bit like Dorico, realizing the 8 beats of rest won’t fit into 2 bars even though they are default rests, but adds an entire extra bar rather than an incorrect partial bar:
Personally I think any of these options are better than Dorico’s current way of handling it, because they all make it impossible to put bars with the incorrect number of beats on a stand. Anything that forces an additional proofreading step increases the chance something wrong will slip though.