Of course you shouldn't be matched against them. But the point is that there is a range of weapons/mods (atac, pmg, percs, remote det, volcano, ...) that are way too strong and very easy to play. And this applies in all tiers/threats in the game.
The problem is that a certain group of people, consisting of low tier golds and dethreaters who play in bronze districts, utilise literally everything they can to win games. New players don't just get beaten when they play against these players, they get overwhelmed and completely destroyed. Losing a match because they lose gunfights is acceptable. But some players throw everything they have at them. Remote det, pig perc, item running with carsurfing volcano's, true ogres popping from behind a corner, killing them before they know what happened, ... Don't you see the problem?
Even with fair matchmaking many of these weapons/mods are just completely unbalanced. Tweaking some of the stats right now is a good temporary solution to make the game bearable for new players.