Didn’t expect any other answer, other than avoiding it.
So you’re basically have no other argument other than „I‘m right and you are not“ and „From my experience you’re wrong“.
So how about this:
The M36B without HEAT-FS is objectively worse than the M36 because it’s significantly less mobile, going from 17.8hp/t to just 13.7hp/t.
That means that only HEAT-FS can remedy the worse performance.
But what is a M36s playstyle?
Well, in essence the M36 plays exactly like an M18.
Both are classes as tank destroyer but unlike your German or Soviet TD they have turrets, have no effective armor against AP shells but are highly mobile.
Without armor they can not face vehicles head-on other than from ambush positions or they will easily be destroyed by any target.
So they must use their mobility to set up ambush or surprise vehicles, to destroy tanks with APHE that can penetrate 90% of the targets they face from the front.
Unlike a turretless Nashorn or a slow Waffenträger, which can penetrate 100% of the vehicles they can see, or a Jagdpanzer IV/70 or SU-85M, which can push up to targets as they aren’t easily destroyed by either SPAA or medium tanks from the front.
Now how does HEAT-FS play into this playstyle?
Well, it doesn’t.
You still want to avoid engagements with vehicles and obviously shoot them before they can fire back.
You also want to kill vehicles as quickly as possible because mobility and firepower are you’re main defense.
You can’t take a shot so you don’t want to get caught reloading.
But when you do everything right, you will kill almost any target in one shot and be able to kill another target by the time you have reloaded.
Now what about the tanks you can’t easily kill?
Jagdpanther, Ferdinand, Tiger II and Jagdtiger are the main enemies you can’t easily kill with APHE from the front.
Panthers are only vulnerable on the turret but that’s the case for almost any other vehicle.
You could load HEAT and be able to penetrate them from the front but nuh-uh, remember your playstyle?
Remember not wanting to engage vehicles from the front because that’s where their mean guns are that you don’t want pointed in your direction?
Sure there are instances where you need it, in order to get a kill but there are many more instances where you don’t need it and where HEAT is actually disadvantages compared to the much higher kill potential of APHE.
Even when your M36 can pen any target, it doesn’t change that everyone can also penetrate your armor.
So engaging targets frontally, where HEAT gives you the advantage in penetration but not damage, makes no sense. Since you’re not going to achieve much more than any medium or light tank that can easily evaporate a M36.
The use case for HEAT-FS is severely limited when being in a save position to shoot tanks in the side is much more profitable.
Even when the whole enemy team is in super heavy tanks, you’re still better off staying hidden and waiting for an opportunity to kill them on one shot than trying to fight out with tanks that can point and click you away.
It’s not that difficult to penetrate 80mm side armor with 90mm APHE. And the majority of targets only have 40-50mm.