The GPU designs in Apple chips has nothing to do with ARM, so even if we accepted that "ARM has notorious scaling issues" (a confusing claim, but even if we too

The GPU designs in Apple chips has nothing to do with ARM, so even if we accepted that "ARM has notorious scaling issues" (a confusing claim, but even if we took the most generous route and assumed it meant "vendors using ARM have scaling issues" -- also not true) it is orthogonal.