This decision is really questionable, this is the first time that I see the game going backwards instead of moving forward.
Tournaments are now neglected by players only because matchmaking give more rewards than tournaments (except shiny tours).
I really don't think there is a lack of community playing LC, they just prefer play OU because there is more people here, and it's the same fact in others tiers. I'm pretty sure if there were a LC matchmaking, there would be as many people as NU or UU. Instead of testing this matchmaking, they remove the entire tier.
I'm waiting for an answer to understand why not let players do LC auto-tournaments if they want to keep the tier alive, although they no longer believe in it.
Edit :
I forgot how many times we requested change for this tier, how many time we asked for a new system of battle, and now that lasts decisions to make the tier viable (test ban porygon or regenerator, or at least berry juice), and now we just cut off the discussions.