All true, but it is still possible they can get foreign help maintaining more complex equipment. Russian, Turk, Chinese, Qatari, etc. All of the aforementioned would be happy to look the other way if said equipment was used for purposes the US and West found objectionable.
You are being overly optimistic that; 1-Those countries will want to do business with the Taliban, 2-They would be willing to face the consequences of supporting the Taliban, 3-Have the technical expertise to maintain the equipment and 4-Can afford it. Not all apply to all of the countries you listed but at least one applies to at least one and usually more.
I find it interesting and illuminating you include Qatar on that list, while they have been more willing to deal with the Taliban than pretty much any other country their main security guarantor remains the US, especially given their still strained relations with their Gulf ‘allies’.