There's only a small increase in the number of comments relative to the number of posts, but in absolute terms the number of comments is also decreasing. It could be bots staying active, but I don't have a chart of that right now.

Total comments on posts yesterday: 15,878

Accounts with most comments yesterday:
@hivebuzz 1376
@beerlover 370
@pizzabot 343
@poshtoken 276
@ecency 271
@luvshares 242
@actifit 170
@hk14d 159
@u89gw 159
@w95hj 158
@vmn31 158
@wiv01 158

So quite a lot of bots...