There are some tasks where single core definitely limits the performance (some games especially). For most of the 'compute' oriented tasks like CAD/3D, LLMs, etc. multicore is great, and the slow single core speed doesn't seem to get in the way.
I would still rather have 128 M1-class cores than 128 Neoverse-N1 cores :)
I would still rather have 128 M1-class cores than 128 Neoverse-N1 cores :)