well not many can be as corrupt as Myanmar juntabut they are equally dictatorial and barbaric.from what I observe, the Taliban is not as corrupt as the Myanmar govt, in fact they're far more superior in accountability compared to the ANA.
As for isolated, we'll have to wait and see, currently there are 6 iirc that are otw to recognize Taliban, as I've mentioned here before, those country are a boost to Taliban legitimacy as well as their ability to do day to day affairs running the state, but what I question since long time ago is how much benefit for this country will the Taliban give.
as for those Afghanistan sitting on a trillion dollar mineral hype, don't count on it. Ask yourself how many nation prosper by mineral wealth?? in fact it's usually the contrary. have you ever seen the movie blood diamond???
Blood Diamond - Wikipedia
en.wikipedia.org
or watch closely how Indonesia's Papua region are backwards despite having a mountain of goldmine and East Timor are dirt poor despite sitting on an abundance of oil
it will isolated count on it USA will sanction Taliban it lost thousands fighting against them it is just plain impossible they will allow Taliban to be on their merry way to nationhood now.
as for Afghanistans mineral wealth you need robust infrastructure and Human Resource to make any proper use of it it will take more than a decade of continuous investment for them to reach that level with support from China if not more if Chinese even find value in doing that