interpretation: play on 2B steal attempt

[MTR]

If the runner executes a normal slide into a base, interference is a very unlikely call.

However, if the runner ran into the fielder to dislodge the ball or prevent a catch, or slid feet up with apparent intent to injure, then interference would be appropriate, and possibly ejection.

If you are assuming the fielder has the ball, yes. If the player does not have the ball, not necessarily so. There is no rule requiring the runner to change their path for a defender. If the runner wants to run through a base, s/he has that right. But if the umpire judges it to be intentional, an ejection is quite possible.