On 6 Dec 2022, at 12:55, Turritopsis Dohrnii Teo En Ming <tdtemccnp@gmail.com> wrote:

Meta engineers believe that any performance cost is small and worth it
while SUSE engineers previously cited around possible 5~10%
regressions.

meta engineers do a lot of performance work and their experience is what is being referred to.
Indeed along with the SUSE engineers experience.

As someone else said they are not using Fedora.

Barry