The original premise of Live Weather was that it was supposed to be 100 percent dynamic based on the MeteoBlue predictive model, and that was the case at the release of MSFS. The problem with that, is that a predictive model is just that - a forecast of what the weather at an airport “might” be at a given time - not what it actually is. While it is true that a METAR is static - it is a snapshot of what the weather was at a given time - it is an exact representation of the actual weather at the time of observation in terms of wind direction and velocity, temperature, pressure, visibility, cloud cover and precipitation.
Even in real world aviation, a pre-recorded ATIS broadcast is just a verbal readout of the most current METAR, and in most cases that is “good enough” for arriving and departing aircraft to know “what to expect” in terms of weather. If weather changes significantly, both the METAR and ATIS will be updated.
AWOS is different. That is an automated voice broadcast that gives the exact conditions at that very moment based on the readings of automated weather instruments.
Even for VFR arrivals, a tower controller will often give a verbal update of the exact wind direction and velocity (at that very moment) when an aircraft is on short final - especially if the direction of speed is varying - likewise an update of visibility (in terms of RVR) when conditions are low IFR. None of this is really possible in a flight simulator.
The problem with using a predictive model alone to set airport weather is that it may at times be very different than the actual weather. This was a big complaint with MSFS from the very beginning.
Those who are emulating IFR (or even VFR) using real world weather expect to find conditions (at the destination airport) reasonably close to the latest METAR. This is important to correctly determine well in advance of arrival which runway or runways will be active, and whether conditions will be IFR (requiring an instrument approach), or VFR (permitting a visual approach). It is especially important for anyone using an online network like VATSIM or Pilot Edge whose controllers will be using the latest METAR.
Now, with this new system, it’s obviously a big problem if the METAR cloud bases or visibilities are incorrectly rendered, turning what should be an easy VFR approach into unexpected IFR - and MSFS users are 100 percent justified in expecting this to be fixed. But, I would not want to see the developers abandon the attempt to blend r/w METAR data with the existing model weather. I don’t think there would be an easy way to disable the new system because the new cloud and visibility data is probably embedded into the overall Live Weather feed from the server. The only solution for those who do not want to deal with the current problems would probably be to use one of the weather presets, which override Live Weather.
Even though I personally enjoy flying with r/w weather most of the time, I will often use the “clear sky” preset if I simply want to do some VFR sightseeing without bothering with clouds or wind - or if I am testing a new aircraft model.