Having a ■■■■■■ attitude isn’t going to make good quality airliners appear.
Be frustrated, but your attitude doesn’t need to be so aggressive. A dev from FBW just stated their autopilot does work below 17fps, they just wouldn’t recommend it. This is because their autopilot is custom - I assume. You could try the stable version if it still uses default MSFS autopilot.
Flight sims have always had ‘the waiting game’ for new, complex airliners. There’s many in the works from PMDG, Fenix, The Maddog and more. In the meantime the FBW a320 is great.