Maybe people just need to accept the fact that outside of one year and a few months this is the hitter he's always been? Remember, he wasn't that great the 1st half of 2018 and the 1st half of 2018 batted ball data (2.49 GB/FB, 24.3% line drives, 54% ground ball and 21.7% fly balls) is basically around the same as his batted ball data for the rest of his career. The second half of 2018 and 2019 were the outliers.
Even the biggest optimist about that trade wasn't expecting Yelich to come in and give us 40 bombs and a 1.000+ OPS because not only had he never done it and didn't seem to be that type of hitter, the batted ball data also didn't support it. Whether it was some mechanical adjustment he made midseason or whatever, I don't know and if it is is there any way to get back to it I don't know either but this could just be a guy who had an amazing season plus where everything went right and pitchers sort of figured him out.