FT8 is supposed to be not quite as good as JT65 on weak signals. However, the take-up of FT8 is phenomenal.
I am wondering if one of the reasons we are still seeing Es on 6m so much this late in the season is that users are in just one place and even very short openings get detected? Most FT8 is between 50.313 and 50.315MHz. In the past, a CQ on SSB or CW might well have been missed. Also, FT8 works with signals that are more marginal than SSB or CW.
Let us hope a few remain on 6m so we can see if 6m Es is much commoner than we previously thought. In an average "out of season" day it would not surprise me to see brief openings. Remember, you only need 15 seconds to be spotted with FT8, probably even less.
|6m FT8 RX spots today|