People are still projecting the 90s civil war in Afghanistan, who backed who who and overly implying it in present situation.
I don't know if people are noticing but Saudi Arabia has been irrelevant in these affairs for a long time now. Taliban have opened their office in Qatar since 2010 how many talks/meetings even in back channel with the Saudis? None but they have met Chinese, Russians, Qatari, Turkish and even Iranians officials many times.
Yes in the past Taliban didn't cared who recognised their rule they thought they could deal with the rest of the world through these three countries Saudi, Pakistan and UAE. But remember when US launched their war against them all these countries sided with US, a major blow for Taliban.
This is something Taliban may or may not have forgotten. If you read journalists who've met Taliban leaders, they despise the political/military establishment of these countries after that episode.