Just FYI if you're doing Alps, Alps ABS doubleshot DCS keycaps interfere with the switches on the entirety of the home row. Alps PBT DCS does not have this issue at all, I strongly suggest dye-sub PBT if you're doing Alps DCS.
Can you link to a discussion? First time I hear of this, have got an alps wob set sitting and waiting for an eventual alps build.
I read about it on the Sandkeys ME Discord server (owned by the runner of DCS 9009, which had Alps kits) so I've attached a screenshot. I couldn't find anyone talking about it on GH. Additionally,
here is a video which I believe demonstrates said interference, high pitched tapping noise when pressing home row keys compared to keys on other rows.