I had a rather large order (for me) for project(s) from Square D. No AFCI's in the order as it was for non dwelling applications. But still had items that took months to receive.
probably wise to order them early so that hopefully you have them when needed. I realize this may not help so much with some small jobs, but if say wiring a new house, if you ordered what you needed early on you may have them by the time you actually need them. Otherwise you just get put at the back end of the backorder list when you finally do order them.They’ll make you buy breakers you don’t need , only to be replaced with the AF.
STD breakers don't see propagating wave forms from all directions.Standard breakers already provide AFCI protection. You don't need semi conductors, that is a urban legend.