I think read somewhere that the main problem at least with TMSC made chips is the long in advanced booked out production capacity, so if there is an unexpected change in demand (like with GPUs) this can not be adapted to.

However from what I have read, this is planning to use the next generation low-cost mass-consumer APU that AMD probably ordered larger quantities off well in advance. And in general it seems the supply in AMD CPUs is not effected at all right now.

So lets wait and see… and of course stuff like RAM, storage, displays and all that also are a factor. But this does not necessarily have to have such problems.