Python decided to use a single convention (semantic whitespace) instead of two separate ones for machine decodeable scoping and manual/visual scoping. That's part of Python's design principle. The program should behave exactly like what people expect it to (without strenuous reasoning exercises).
But some people treat it as the original sin. Not surprised though. I've seen developers and engineers nurture weird irrational hatred towards all sorts of conventions. It's like a phobia.
Similar views about yaml. It may not be the most elegant - it had to be the superset of JSON, after all. But Yaml is a semi-configuration language while JSON is a pure serialization language. Try writing a kubernetes manifest or a compose file in pure JSON without whitespace alignment or comments (which pure JSON doesn't support anyway). Let's see how pleasant you find it.
Crowdstrike exists for Linux too. In fact, it apparently crashed RHEL and Debian a few months back. That didn't get so much attention.
Falcon seems to be a cross between an antivirus and an intrusion detection system (IDS). There are many antiviruses on Linux, but only one FOSS AV is popular - ClamAV. As for IDS, snort is an example.
But in the true sense, Falcon is much more than just an AV and IDS. It's a way to detect breaches and report it back to CrowdStrike's threat detection and analysis teams. I don't think there exists a proper alternative even in the commercial sector.