Where they may have messed up is with the use of crowdstrike's branding. I've worked for a company that had a near 100% success rate with taking over domains that used their branding. Not just taking down the site, but taking ownership of the whole domain.
Were any of those success for violation of copyright or trademark when used in parody? I don't know if it would hold up, or how long it would even be between a domain registrar handing it over and having a day in court, but there does seem to be a good case for this being a protected use of CrowdStrike's protected branding.
That ruling is only relevant if the operator of clownstrike.lol is in Canada. The US in particular has much better protections for parody than most countries.
