Meatshield tanks are not intended to chase. That's not their role. Saying they suck because they can't chase is like saying the firefly is garbage because it can't fight infantry. It's not its job. Meatshield are supposed to command the area around them. Both do that job exceptionally
My point was that the Churh is a lot better at it than the KV1, and is considered a better unit because of it.
The KV1 is still useful as a battering ram, terrain clearer and damage soaking brick, sure. But not focusing on the KV doesn't really cost your opponent much.
Leaving a churchill ignored lets is get close to grenade, drop smoke walls, and open fire with a lot of automatic AI fire by comparison. It demands attention because letting it get into point blank unchecked hurts.
That reliance on knife fights is also why the rear armour isn't paper. Other heavy tanks like the Tiger anď KT deal punishing damage at any range, while the UKF one has no such distant firepower. But I digress.
The KV kinda doesn't have that same impact. Not terrible, just underwhelming, IMO.