You are less likely to die if your vehicle doesnt blow up.
No?
Well can't die too if the enemy round didnt penetrate. You somehow think turret with lesser firepower can solve the issue when the real thing is in the design in the first place.
The point is with BMP's or that Chinese IFV which i believe you refer to ZBD-04 was that it needs to be amphibious and therefore have rather weak protection in the first place. Ideally they rely on spotting enemy first then blast it with their gun or ATGM's. Or be in combined arms with tanks and dismounted infantry which will prowl the surroundings and direct the BMP's firepower.
The solution is improved protection. But it will sacrifice their amphibious capability. That's how you dont get blown up in the first place.
Even if Russia were to switch to BMP-3 with Epoch turret which is non penetrating with complete separation between munitions and men.. when it got hit with ATGM.. things will always get messy inside.
You understand ? No ? didnt get my point ? the long story short would be. Producing BMP-2 wont save the day period.