I’ve always insisted that Defender is the best AntiVirus and Intrusion prevention solution for any Windows Machine.

MS has a vested interest in making sure nothing bad gets publicised about their OS. As long as the threat exists, (and barring regulatory restrictions) MS will maintain the best intrusion prevention and detection features.

The AntiVirus industry has a vested interest in scaring people into continuing to pay their subscriptions. There are even some conspiracy theories going around that some AV vendors actually pushed viruses into the wild that they could intercept but their competitors couldn’t.

Apple Computers have a reputation of not having viruses (even through they do) partially due to the Security/Obscurity myth and partially because they lock down macOS and have tightly integrated in-house virus detection. The other reason is that their user base is almost exclusively End-User Retail, which is not currently a profitable target.