Can Orisa's 'Halt State' be unlocked with environmental kills?

According to this post, environmental kills do not count towards that achievement.

Orisa's achievement "Halt State" (unlocks pixel spray) does not take environmental kills into consideration

Another thread supports this:

I don't believe environmental kills count, tried that a few times when she first launched got nothing.

This PSA also confirms this behavior with a gif.

It does not appear that environmental damage counts for the Halt State achievement. This is also supported by this Reddit thread.

However, it is still possible to get Halt State, though it is a difficult achievement to get. This thread outlines a number of ways to get the achievement, including:

• Teaming up with a Reaper and pulling the enemies into a Death Blossom
• Using Halt in the middle of a Gravitron Surge which has captured a few enemies
• Using a Hanzo ultimate on King's Row Attack (and using the Halt to line the enemies up)