solo q

Can't know for sure, but the skill distribution curve in pubs, and rank distribution in ranked, are probably responsible for the rise in short squads in either mode. Speaking only for myself here, but I look carefully at the curve in pubs and if I don't like what I see then I quit the match and re-queue. So that may well be me who's missing from your squad. Wish I could tell you that I feel guilty leaving other players short, but the matchmaking in this game is, to put it mildly, rough. They've given us the tools to take control of it and that's exactly what I do. And I encourage other players to do the same.