If your team is constantly outplayed then yes the manager should bark something. It's not barking for the sake of it but if he doesnt then how's he changing the teamplay?
If you see your left wing being overrun targetted then you should get up from your bench, watch close to the very least and instruct new sets of instructions.
The problem is what is he going to shout that that will change the entire dynamics of the team, if it's not something he's worked out in training beforehand? Usually if it's a major change in the first half an hour, it'll be something like a tactical shift (switching from man to man etc or a formation change) that they'll have an easy way of conveying and is something they'll have worked on in training, both in terms of being able to transition during a game and also a scenario in which the team should do this (losing the possession game, conceding within a set amount of minutes, needing to score within a certain time etc). Anything more indepth than changing to a pre-existing set up isn't something you can shout out, at best you'll talk to a player on the sidelines and get him to relay the information, but even then it's gotta be fairly simplistic because otherwise you'll have the problem of half your team changing their approach and the other half still following the initial instructions.
I'm going to use your example of the left wing being overrun. If you're shouting detailed instructions from the touchline, you're 10 yards away from the opposition manager and also some of the wide based opposition players. They can hear everything you say, you don't want to be giving them your gameplan. So in this scenario it's just better to have a word in your fullbacks ear, and also get him to relay the information to those who need to hear it. While there's a few tactical changes you could make here to help stifle them and plug the problem, more useful if it involves something more than just shouting at the fullbacl, you'll also get a manager who'll simply tell their fullback to wisen up or pay attention, but if their half decent the defender will be fully aware of what the problem is.
I find this between Dyche and Brady pretty funny.
While Hudson-Odoi was tearing Burnley apart last season, we had this exchange
Dyche : “Robbie!!! Tune in!!!”
Brady: “I know where he f**king is, I just can’t stop him. What do you want me to do?”
This is the problem with being a fullback, you'll spend one half being close to the manager and when you feck up you'll get an earful
I remember Mourinho spending halves just ripping into Shaw non-stop.
We're far from a well drilled team that needs no tweak and just waiting for the goals to come. We're dysfunctional most of the times. And if the manager sits silently that means he's either not know what to do, ok with it, or simply dont care. Take a pick but none of them are any better.
You dont need to be animated like klopp or pep or even fergie. But the manager are the most important man on the match, analyze the match in real time and make improvements.
I understand what you're saying with the second sentence, it is vitally important that the managers and coaches analyse the game in real time (it's also important the substitutes do this as well as it can help them massively when they come on), it's just that the way of applying any changes you want to make is best done by talking to a player and getting them to relay the information. This is because most of the players can't hear you, it stops the team getting mixed or misinterpreted messages, it avoids the other manager being able to hear your detailed tactical instructions.
Clapping tackles and interceptions, shouting encouragement or telling players to move the ball quicker is what the OP outlined and there's nothing wrong with that stuff, but it's more about firing up your team and motivating them than it is tactically micro managing a game. I'm sure it helps (well kinda) but if the problem is that the team looks dysfunctional and doesn't look drilled then that comes down to what happens on the training ground, and not how the manager acts on the sideline.
We as supporters like to see the manager animated and passionate, but I don't think there's anything wrong with the way Ole conducts himself during games, at least in terms of the things the OP outlined, shouting and encouragement etc.