Yes, the golden years are over, at least for the next two or three years (probably longer) but it has nothing to do with visa lengths or general Thai incompetence and corruption. The world economic system is breaking down,, the central banks world wide are out of money and out of ideas while all nations are awash with debt and inflation, it's what happens when you print 7 trillion dollars of QE. Potential tourists have no discretionary spending money to go on holiday, they can't even pay their electricity and gas bills without government (borrowed) money. The pandemic, QE and the Ukraine/Russian war has shown up the vulnerability of FIAT currencies, Governments no longer steer the ship, central banks and the stock markets have all the power ( Liz Truss in the UK) and now they too are coming apart at the seams, scary times! There is no chance for Thailand, or anywhere else, to attract hoards of tourist willing to upload their Dollars, Euros, Rubles or Yuan, the era of funny money is collapsing.