For sure. In the above case, though, I feel like the bowler should have known better. Sometimes, from behind the stumps, it can be difficult to judge if it's off the pad or bat
As far as I remember, all our wicketkeepers have been like this. They want to take reviews all the time, but it's always the captain who makes the final call and should be blamed for all the bad reviews. I dislike Rizwan's antics in the field a lot, but the captain is to blame here.
Yes, he should stay calm and take his time when taking the reviews. In this match, Pakistan wasted both their reviews that shouldn't been taken. These reviews can make a huge difference in close matches so you must use them very carefully. Rizwan can take a lesson from Dhoni who never looked in a hurry while taking reviews.