This. I am a full-time collaborative pianist. Playing on all kinds on instruments comes with the territory. Most grands at venues are poorly maintained. No attention to regulation on the action even if they’re occasionally tuned. But my well-attended-to Steinway B that I spend three hours a day on at home can’t be compared to any of the digital keyboards that are in circulation now. That they have faithfully rendered acoustical samples is fabulous but the poor reproduction of the sound in 3 dimensional space detracts significantly. The ‘B’ that I play resonates over nearly 7 feet in length. Maybe that problem could be solved with speaker placement in the digital world. But the action on digitals is just not solved problem yet. Compared to the average upright or poorly maintained grand, close - even superior. Compared to a fine well-regulated grand action, there’s more work to do.
All of that said, I’m glad the digital keyboards exist, and the innovation is welcome especially if it opens up piano playing to a wider range of home musicians and kids.