I don't think BIP101 is accepted by the majority. In fact, it looks like there are a bunch of v4 blocks on the testnet which are not for BIP101. It could also just be one person with a few miners (since the testnet hashrate is so low) that is mining a BIP101 blocks but the fork has not happened.

The price could also be growing due to the MMM Global ponzi where a lot of people are "investing" Since it uses Bitcoin, people might just be buying Bitcoin to use in that ponzi, which ultimately will create more negative media for Bitcoin once that ponzi collapses.