Same here!
i feel a big amount of frustration that I try to measure wisely so much it’s huge! I really didn’t expect such a lack of realism about the real weather! For isntance METAR/TAF tell you that it is stormy, turbulent mass air, gusty etc and MFS2020 provides clear skies or other “weird weather” even with CB but without any turb into the clouds??? It kills the immersion as a point you don’t want to go! … or you just don’t have the weather at all but CAVOK… Sometimes for some X reason it’s almost there, but you get to point B and the weather doesn’t match with the reality (METAR/TAF) of your destination, so that it is basically impossible to make a flight plan that mostly based on the weather conditions of the day! … anyway very frustrating, I can’t even do a single realistic flight or just enyoing the gorgeous panorama!
But the worst is that there is not a single word from MFS2020!!!
Yet they were so loud before the released date claiming that MFS2020 has the best realistic engine weather ever (selling point) so now we don’t hear from them anymore? How come! Even nothing for the next update?
Such an obvious failure should have been checked and fixed before the released date! But as a matter of fact if you check the list of bug-reports, there isn’t a bunch of legitimate complaints about the broken engine weather and that makes me worried, that shows that the majority of users do not care about this big part of realism that is missing, the corner stone of realism for a flight simulator: THE WEATHER!
I think they bought this game for other purposes, of course there is a place for everybody and I’m very comfortable with that because this game can create vocations as it happened to me with FS2004 and I’m still grateful for that! From simming I became a pilot and I’m still a passionate simmer even more now! without the sim it might had never happened to me! Therefore some simmers here for some of them who don’t know anything about aviation can be our futur captains tomorrow! 
Anyway, I do believe that so far MFS2020 is more an eye-candy very beautiful game (I’m still impressed and amazed about lights etc) but it is definitely not a sim especially if the lack of the minimum realism required allows you to fly a Cub in TS or CB without any danger that will occure in such severe conditions in real life even in XPLANE!
I’m not even talking about how the engine interacts with the elements such as OAT, mass air, clouds with differential of temperature, alti-pressure etc, it’s another disaster story it looks like there is no alterity which makes that game impossible to fly with POH (where Xplane is the best so far for all those things) etc but yes we have here beautiful fauna, lights, rainbows, clouds, big respect for the talent of the team and we also have some turb generated around and above the relief and some CAT the only realitic point that I’ve found in MFS2020… However it was supposed to be a Flight Simulator at the first place not a game !
At least if we already had a message from MFS2020 as fro instance : “Hey guys sorry we promised you the best realistic engine weather and we all know that it is broken and many of you guys bought it for that, we are working on it, a patch will come soon even before the major update! Be patient it’s coming” 
Maybe for Christmas ? Thank you Xplane you’re still there!
Ok let’s hope anyway… 
because I really want this game becomes a flight simulator, there is so much potential, we just need a real weather and I’ll be ok to fly the DR400, one of the bird that has a correct flight model, not perfect but it’s ok, after A2A Simulations will come for study level birds but it’s a MAYDAY MAYDAY MAYDAY to get an Engine-Weather for MFS2020 now!!! I mean a realistic one as it was planned based on a miryad of advertisings and youtube videos… so what now ? What next?
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