No, especially in the past few weeks since Germany went ahead and closed its last nuclear power, France's electricity has really been 10-30x less carbon intensive most of the time.
Your source, over your selected timescale, also shows both production and consumption, and over that time period France's electricity imports took it from 29mg to 30mg which means the high speed trains retain their two order of magnitude climate advantage over plane travel.
Oh absolutely, I agree with that.
Mass electrification of travel + low carbon production is a winning combination (and it's going to be a headache for countries like Germany)