All Biden had to say is
“... look the trans day has gone on for years on Mar 31 and just happened to fall on Easter this year because of the Christian calendar which celebrates Easter on a different day each year. We do not seek to offend any religious group ... etc etc”
It was a simple matter to explain away with their usual BS. But they chose to not do that.
Thus one can infer that they got some enjoyment out of poking a stick in Christian’s eyes since they are not a favored class. I see no other explanation.
Western Christian Easter will not fall again on March 31 until sometime after 2060.
I’m in my seventh decade...not likely to pass this way again.