There are a lot of reasons you don’t necessarily object to every objectionable question. For one, the objectionable testimony may actually be helping you. And for another, objections can draw the jury’s attention to something you don’t want them to pay attention to, or make it look like you are trying to hide something.
Experienced trial lawyers often make fewer objections, because they’ve learned that less is often more in front of the jury.
It is hard for a jury to pay attention during all of the testimony during a trial. It is like trying to listen to two weeks of lectures, eight hours a day, in a course that you did not choose to take.
You want the jury to pay attention when you are questioning witnesses, not necessarily when the other side is questioning witnesses. If the jurors are starting to nod off while the opposing attorney is questioning a witness and you make an objection, the jury will pay more attention. If the objection is sustained, they will really start paying more attention.
So you object only when you have to. When you have to object you stand up and calmly state the objection, like it is no big deal whichever way the judge rules.
These defense attorneys are just piss poor lawyers. Look how they ignore their own client:
https://www.youtube.com/watch?v=9gTginEg_4U&t=6798s