Wow that is a bad take.

> virus checkers - slowing down workstations for minimal benefit.

Being able to stop known malware is a significant benefit.

> internet access filtering - Businesses doing deep packet inspection on the off chance that one of the staff members might bring in something nasty.

Doesn't have to be DPI, being able to say "hey this porn is not okay during work" is absolutely fine. Especially if there's malware out there that redirects you around to sites you might not want your customers to see.

> The reality is, that if somebody wants to compromise your security, they will find a way.

That's such a lie by omission, there's a lot of unsophisticated spray-n-pray type of attacks out there.