There is one and only one coin, formerly called Bitmonero, now called Monero. There was a community vote in favor (despite likely ballot stuffing against). All of the major stakeholders at the time agreed with the rename, including TFT.
The code base is still called bitmonero. There is no reason to rename it, though we certainly could have if we really wanted to.
TFT said he he is sentimental about the Bitmonero name, which I can understand, so I don't think there is any malice or harm in him continuing to use it. He just posted the nice hash rate chart on here using the old name. Obviously he understands that they are one and the same coin.
Would it not suppress confusion if the Monero code base was renamed Monero? I'n not involved in politics behind things but have some understanding. People without any knowledge will just be confused. Now there are too many threads. Is it Bitmonero or Monero? People say Monero but all code uses Bitmonero. Many people confused. It's bad for Monero. I think it's problem.