Never stated anything regarding changing the rules though!
I only said for "mission critical" stuff, like rendering etc. it is advised to do 24 hour runs at least.
8 hour runs are fine for general stability.
Prime95 version 26.6 do not have AVX instructions enabled so you could stick to those if you so prefer.
That said Prime95 above version 26.6 all use AVX instructions and are generally recommended to brutally test your system as it'll be updated in identifiers per CPU as well for maximum torture testing.
There's no way to disable AVX in the versions so ... like I said AVX Offset in the BIOS for lower speed bins for max. stability.
AVX workloads are considerably more punishing than "standard" workloads.