1. this is a crowdstrike issue not windows
2. plenty of malware and c2 systems happily operate off all systems, regardless of how hardened (or how unix) they are - IDS/IPS is a reactive way to try and mitigate this
3. you don't need third party software to compromise the unix kernel, you just need to wait a week or two until someone finds a bug in the kernel itself
all that being said, this has solarwinds vibes. the push for these enterprise IDS systems needs to be weighted, the approach adjusted