If you've got a public relationship with one of the biggest (and sometimes the biggest) company in the world and they suddenly and very publicly announce 'we dont want your **** anymore' then that's quite bad.With such a small market share, how can Apple silicon be a major blow to Intel?
There's also the fact that Intel has no ARM strategy worth the paper it's written on, whereas AMD, nVidia, Microsoft, Qualcom and all the other big names in the PC space do, which has become many times more embarrassing now that Apple's Mx line has demonstrated that ARM is perfectly competitive with x86 at a fraction of the power.