some of the largest and most well known consultancies do this as a matter of practice after they overbook themselves for projects for which they do not have staff on the bench to fill
Been my experience your regular software org does something very similar. Who among us hasn’t had to drop an entire epic’s worth of work to go spin up some MVP (that eventually becomes a bug-riddled production shitstorm) of a component because a claim got made on a sales call that “we’ve been working on it for weeks” and a promise got made that “we could have a demo ready to go just for you by the end of the quarter”? Because you’re “the senior”.
Not saying it’s the norm.
Just that it happens probably more than it should.