It'll be interesting to see how changes pan out, but I can totally see why it's being adjusted.
Against a competent team with good communication, it's maybe OK to defend against, with a little luck and a fairly large shift in team tactics. In your average basic non-commutative PUG though, it's overpowered as all getout. Even if you see a purgestroyer sauntering merrily through the air towards your team with plenty of advance warning, and point it out, then frantically mash the F key as it gets closer, you have close to no defence against it. It's GOING to get you. It's like a predator alien with no morals cut loose in a daycare center.
Playing against even a moderately competent purge player, I can understand how someone tied to train tracks in the old west by a mustachioed villain must have felt.
If anything, (IMHO) it maybe speaks more to how overpowered a multi-healer team is. I think purge ramming being considered one of the few viable tactics against it is a symptom of an issue with the near invulnerability offered to a team by that combo. 1 Koschei can be a tough nut to crack; 2 need competent team play, 3 are effectively invincible.