I haven't read it in years, but I think he said the problems started really showing up as the core count got to 10. It just wasn't going to work going forward at least.I run an overclocked 8700k with an overclocked ring ratio, and when I could play Apex Legends under Linux (before they blocked Linux users via updated anticheat - it really wasn't a great game anyway) I never once experienced a crash. This article seems like mostly FUD to me.
The 8700K is the CPU I wish I would have jumped on at the time. I regretted not getting that one. I'd still be running it today too I think.