Not necessarily!

A lot of antiviruses would advertise various “shields”: Web protection, Exploit protection, Malware protection, Ransomware protection, Behavior blocker, Heuristic, Machine learning , etc and all kind of other gimmicks , in order to inspire confidence.

In fact, 99% of detection is still signature based, and when somebody tries to test a specific shield , the answer is " is nonsense"

To illustrate better, see here :

https://support.emsisoft.com/topic/27503-new-anti-ransom-module/

Emsisoft changed the name of their “behavior blocker” (formerly known as Mamutu" to Anti_Ransomware module strictly for commercial reasons

In fact, that module has nothing to do with ransomware.