Hi,
A couple of thoughts probably already expressed.
1) ATC should have probably instructed you to start descending a little earlier. They know planes' descent capability is less at flaps up, or green dot speeds, so the first one goes to them.
2) If ATC "screws up" by having you slow down while too high, at some point they´ll realize AND they´ll fix it with a 360° turn, a vector...etc..
3) You can always inform ATC that your rate of descent at low speeds will be low AND/OR use a few more kts to stay away from augmented VLS due to spdbk, and extend it.
Now all that being said, this situations happen often and if this guy yells at their right seating colleagues for being cautious like you were, then he needs to do something else besides flying. If you had increased your speed a few knots to use full spdbk he would have probably yelled at you saying "ATC said slowest speed you "%$&!"%($"#%".
As a first officer, it´s hard to guess what each captain you fly with wants you to in these situations.
I am a left seating ignorant, but what I do is I politely tell them what I want and spare them the guessing, when these things happen and I realize the other guy is in doubt.
If there is more than one correct or acceptable course of action (99% of the time) you can just check with your captain which one he prefers.
Enjoy your flying and disregard this
.