now we come into the old DND problem of realism vs utility.
The argument that restrictions for martial maneuvers are "Unrealistic" is the exact reason dnd doesnt have them.
Ive recently read through tome of battle again and had a good laugh about what grognards considered outlandishly "anime" (it includes things like distracting opponent sso they cant make opportunity attacks, it realy isnt what youve heard it is besides those classes that are obviously meant to be monk stand ins)
The argument always is the same, there should be no restrictions. the problem is that the way DnD is structured, if you do not restrict things, they are either better or worse.
That leads to the following situation
1. Either a maneuver is just a better combat option than a basic attack, then theres no reason no tto do it constantly. This so far has never happened.
2. a maneuver is a lot worse than a full attack -> this is how it is in most editions
3. you have to invest a massive ammount of feats to get a maneuver, which then leads to situation 1
Theres a reason the battlemasters maneuver require superiority dice. This gives it a form of ressource and risk management.
Thats why 4e had AEDU and why Tome of Battle had "Maneuvers Readied".
This knee jerk reaction of "but its unrealistic" is actually bad for having decent martials.
Thats it.
We will have this again in BG3.
Larian changed shove and jump to a bonus action with the argument: "Players will rather use the regular attack or cast a spell than using other actions. So they will never see the cool stuff we created. Lets just make it a bonus action so they can attack and see the funny stuff."
This will change the standard interaction with an enemy from "attack every round" to "attack and throw the enemy around every round", because an attack with a sword does more damage than shove, but attack+shove deals more damage than one of those actions alone.
With the normal DnD rules you would only shove when the enemy stands on a really high cliff or you can push him into a pit with spikes or even lava.
You mentioned the battlemaster and you are correct. Its good special maneuvers need resources, else they are either useless or they become the standart action. Maybe Larian needs to make some restrictions for bonus actions or special abilities of weapons (no cooldown please, this is so much non DnD)
PS: If they keep shove and jump a bonus action, they should add a withdraw action and jump provokes AoO. It makes no sense to jump away from an enemy just like this.